Stratum ID 7-character (cnt + region ID + original stratum ID)
MDA0010 = MDA - stratum 10: Russian / Big city / Mixed
MAC0010 = MAC - stratum 10: Private-not-in-Net, Grammar-International, Portuguese
MKD0010 = MKD - stratum 10: ISCED3/Macedonian/General
BIH0010 = BIH - stratum 10: Kanton Sarajevo/ISCED 3
LBN0010 = LBN - stratum 10: 10. MIXED / Public / Rural
FIN0010 = FIN - stratum 10: Swedish speaking area - rural
BLR0010 = BLR - stratum 10: Rural/Secondary Special Educational
MEX0010 = MEX - stratum 10: Upper Secondary / Private / Large
QCY0010 = QCY - stratum 10: ISCED3 / Vocational / Public
URY0010 = URY - stratum 10: Public Technical non formal schools/Lower secondary only
ESP9010 = ESP - stratum 10: Canary Islands, private
ARE0110 = ARE - stratum 10: Abu Dhabi / Private / Other
TAP0110 = TAP - stratum 10: Regular senior secondary (2)/Private(2)/Urban(1)
TUR0110 = TUR - stratum 10: Anatolian High School- C
LTU0110 = LTU - stratum 10: Lithuanian / town / basic
KAZ0110 = KAZ - stratum 10: non-intellectual / Kostanayskaya oblast
FRA0210 = FRA - stratum 10: Guadeloupe/Guyane/Martinique Lycée agricole LS
ALB0210 = ALB - stratum 10: Rural / Center / Private
CHE0210 = CHE - stratum 10: French, Mixed, Non-Urban
DEU0210 = DEU - stratum 10: NOR / Nordrhein-Westfalen (NW)
KAZ0210 = KAZ - stratum 10: non-intellectual / Kostanayskaya oblast
ITA0310 = ITA - stratum 10: Toscana / Centro di Formazione Professionale
CHL0310 = CHL - stratum 10: SUBSIDIZED / PRIMARY&SECONDARY / TP
KAZ0310 = KAZ - stratum 10: non-intellectual / Kostanayskaya oblast
ARG0410 = ARG - stratum 10: Córdoba-Private schools
COL0410 = COL - stratum 10: Rest of the Country / Urban-Public
ESP0510 = ESP - stratum 10: Canary Islands, private
MDA0020 = MDA - stratum 20: Mixed / Big city / ISCED2
BIH0020 = BIH - stratum 20: Regija Hercegovina/ISCED 3
BEL0120 = BEL - stratum 20: Flanders/Special Ed/community
FRA0220 = FRA - stratum 20: Mayotte Collège LS
ARE0220 = ARE - stratum 20: Dubai / Private / Other
QCI0220 = QCI - stratum 20: Shanghai / City / Academic / ISCED3
TAP0220 = TAP - stratum 20: Comprehensive senior secondary (4)/Public(1)/Suburban(2)
TUR0320 = TUR - stratum 20: Anatolian Imam and Preacher High School - C
GBR1320 = QUK - stratum 20: Wales_independent_Central South Wales
ITA0520 = ITA - stratum 20: Trento / Centro di Formazione Professionale
ARG0520 = ARG - stratum 20: Patagonia-Private schools
LTU0520 = LTU - stratum 20: Other multi-language / NA / NA
BIH0030 = BIH - stratum 30: Unsko-sanski kanton/ISCED 3
CZE3030 = CZE - stratum 30: Voc-Tech-Conservatory with maturate
TUR0230 = TUR - stratum 30: Vocational and Technical Anatolian High School - D
GBR1230 = QUK - stratum 30: Northern Ireland_voluntary grammar_North Eastern
ARE0330 = ARE - stratum 30: Sharjah / Private / Other
TAP0330 = TAP - stratum 30: Comprehensive junior-senior high (5)/Private(2)/Rural(3)
ITA0730 = ITA - stratum 30: Molise / Centro di Formazione Professionale
ARE0440 = ARE - stratum 40: Ajman / Private / Other
QCI0350 = QCI - stratum 50: Jiangsu / Rural area / Academic / ISCED3
ARE0660 = ARE - stratum 60: Ras Al Khaimah / Private / Other
ARE0770 = ARE - stratum 70: Fujairah / Private / Other
MDA0001 = MDA - stratum 01: Romanian / Big city / Mixed
MKD0001 = MKD - stratum 01: ISCED2/Macedonian/General
BIH0001 = BIH - stratum 01: Bosansko-podrinjski kanton Goražde/ISCED 2
IRL0001 = IRL - stratum 01: Community-comp/up to 45
LBN0001 = LBN - stratum 01: 1. ISCED2AG / Public / Urban
FIN0001 = FIN - stratum 01: Helsinki/Uusimaa - urban
MAR0001 = MAR - stratum 01: Tanger-Tetouan-Al Hoceima
NOR0001 = NOR - stratum 01: Lower secondary schools
HRV0001 = HRV - stratum 01: Four year vocational programme
MEX0001 = MEX - stratum 01: Lower Secondary / Public / Large
QCY0001 = QCY - stratum 01: ISCED2 / General / Public
URY0001 = URY - stratum 01: Public General Secondary Schools & Military School/Lower secondary only
SVN1001 = SVN - stratum 01: GIMg = gymnasia general
FRA0101 = FRA - stratum 01: Métropolitaine Lycée GT LS
ALB0101 = ALB - stratum 01: Urban / North / Public
CHE0101 = CHE - stratum 01: German, ISCED 2, Urban Core Area
ARE0101 = ARE - stratum 01: Abu Dhabi / Public / MoE
QCI0101 = QCI - stratum 01: Beijing / City / Academic / ISCED2
BEL0101 = BEL - stratum 01: Flanders/Gen Ed only/private subsidized/ISCED2
CHL0101 = CHL - stratum 01: PRIMARY / PRIMARY ONLY
VNM0101 = VNM - stratum 01: Northern Vietnam / >50% public funding / Urban
CAN0101 = CAN - stratum 01: prov 10 Fr.& Eng. 0,1,2
SVN0101 = SVN - stratum 01: GIMg = gymnasia general
TAP0101 = TAP - stratum 01: Junior high (1)/Public(1)/Urban(1)
KOR0101 = KOR - stratum 01: Lower Secondary/General
MYS0101 = MYS - stratum 01: MOE National Secondary School/Other States
DEU0101 = DEU - stratum 01: NOR / Baden-Württemberg (BW)
LTU0101 = LTU - stratum 01: Lithuanian / Capital / Gymnasium
LUX0101 = LUX - stratum 01: 1: ESC government-public
KAZ0101 = KAZ - stratum 01: non-intellectual / Astana city
QAZ0101 = QAZ - stratum 01: Urban/Azerbaijani/Public
SVN1101 = SVN - stratum 01: GIMg = gymnasia general
GBR1101 = QUK - stratum 01: England_maintained selective_All regions
SVN0201 = SVN - stratum 01: GIMg = gymnasia general
KAZ0201 = KAZ - stratum 01: non-intellectual / Astana city
SVN1201 = SVN - stratum 01: GIMg = gymnasia general
SVN0301 = SVN - stratum 01: GIMg = gymnasia general
TUR0301 = TUR - stratum 01: Lower-Secondary School
KAZ0301 = KAZ - stratum 01: non-intellectual / Astana city
SVN0401 = SVN - stratum 01: GIMg = gymnasia general
SVN0501 = SVN - stratum 01: GIMg = gymnasia general
SVN0601 = SVN - stratum 01: GIMg = gymnasia general
SVN0701 = SVN - stratum 01: GIMg = gymnasia general
SVN0801 = SVN - stratum 01: GIMg = gymnasia general
SVN0901 = SVN - stratum 01: GIMg = gymnasia general
MDA0011 = MDA - stratum 11: Russian / Big city / ISCED2
MKD0011 = MKD - stratum 11: ISCED3/Macedonian/Mixed
BIH0011 = BIH - stratum 11: Regija Banja Luka/ISCED 2
LBN0011 = LBN - stratum 11: 11. MIXED / Private / Urban
MAR0011 = MAR - stratum 11: Laayoune-Sakia El Hamra
ISR0011 = ISR - stratum 11: Apprenticeship institutions – Hebrew
MEX0011 = MEX - stratum 11: Upper Secondary / Private / Moderately small
QCY0011 = QCY - stratum 11: ISCED3 / Vocational / Private
URY0011 = URY - stratum 11: Rural Public Schools with Lower Secondary/Lower secondary only
QCI0111 = QCI - stratum 11: Beijing / Town / Vocational / ISCED3
BEL0111 = BEL - stratum 11: Flanders/Gen Ed and other type/community/ISCED3
TUR0111 = TUR - stratum 11: Anatolian High School- D
LTU0111 = LTU - stratum 11: Lithuanian / town / progymnasium
KAZ0111 = KAZ - stratum 11: non-intellectual / Kyzyl-Ordinskaya oblast
GBR1111 = QUK - stratum 11: England_academy_Midlands
THA0211 = THA - stratum 11: OHEC/ISCED2 only & Mixed
FRA0211 = FRA - stratum 11: Guadeloupe/Guyane/Martinique MSS
ALB0211 = ALB - stratum 11: Rural / South / Public
CHE0211 = CHE - stratum 11: French, ISCED 3, Urban Core Area
ARE0211 = ARE - stratum 11: Dubai / Public / MoE
CAN0211 = CAN - stratum 11: prov 11 Fr.& Eng. 0,1,2
DEU0211 = DEU - stratum 11: NOR / Rheinland-Pfalz (RP)
BRA0311 = BRA - stratum 11: South,Public Municipal
CHL0311 = CHL - stratum 11: SUBSIDIZED / SECONDARY / HS
VNM0311 = VNM - stratum 11: Southern Vietnam / >50% public funding / Urban
BRN0311 = BRN - stratum 11: International Schools / Mixed ISCED
KAZ0311 = KAZ - stratum 11: non-intellectual / Kyzyl-Ordinskaya oblast
COL0411 = COL - stratum 11: Rest of the Country / Rural-Public
ARG0511 = ARG - stratum 11: Santa Fe-Public schools
MDA0021 = MDA - stratum 21: Mixed / Big city / ISCED3
BIH0021 = BIH - stratum 21: Regija Prijedor/ISCED 2
ISL0021 = ISL - stratum 21: Norðurland vestra / 1-8
BEL0121 = BEL - stratum 21: Flanders/Part-time Vocational Ed
FRA0221 = FRA - stratum 21: Mayotte Lycée PRO LS
QCI0221 = QCI - stratum 21: Shanghai / City / Academic / Mixed
TAP0221 = TAP - stratum 21: Comprehensive senior secondary (4)/Public(1)/Rural(3)
ARE0321 = ARE - stratum 21: Sharjah / Public / MoE
TUR0321 = TUR - stratum 21: Anatolian Imam and Preacher High School - D
GBR1321 = QUK - stratum 21: Wales_independent_South East Wales
BIH0031 = BIH - stratum 31: Zeničko-dobojski kanton/ISCED 2
CZE3131 = CZE - stratum 31: Voc-Tech Secondary without maturate
QCI0231 = QCI - stratum 31: Shanghai / Rural area / Academic / ISCED2
TUR0231 = TUR - stratum 31: Vocational and Technical Anatolian High School - E
GBR1231 = QUK - stratum 31: Northern Ireland_voluntary grammar_South Eastern
TAP0331 = TAP - stratum 31: Five-year junior college (6)/Public(1)/Urban(1)
ARE0431 = ARE - stratum 31: Ajman / Public / MoE
QCI0341 = QCI - stratum 41: Jiangsu / City / Vocational / ISCED3
ARE0541 = ARE - stratum 41: Umm Al Quwain / Public / MoE
ITA0741 = ITA - stratum 41: Abruzzo / Istituto Tecnico
QCI0351 = QCI - stratum 51: Jiangsu / Rural area / Academic / Mixed
ARE0651 = ARE - stratum 51: Ras Al Khaimah / Public / MoE
ITA0751 = ITA - stratum 51: Marche / Istituto Tecnico
QCI0461 = QCI - stratum 61: Zhejiang / Town / Academic / ISCED2
ARE0761 = ARE - stratum 61: Fujairah / Public / MoE
QCI0471 = QCI - stratum 71: Zhejiang / Rural area / Vocational / ISCED3
MDA0002 = MDA - stratum 02: Romanian / Big city / ISCED2
MAC0002 = MAC - stratum 02: Government, Grammar-International, Chinese and Portuguese
BIH0002 = BIH - stratum 02: Bosansko-podrinjski kanton Goražde/ISCED 3
IRL0002 = IRL - stratum 02: Community-comp/46 - 85
LBN0002 = LBN - stratum 02: 2. ISCED2AG / Public / Rural
FIN0002 = FIN - stratum 02: Helsinki/Uusimaa - rural
GBR0002 = QSC - stratum 02: pub fund-second lowest
NOR0002 = NOR - stratum 02: Upper secondary schools
ISR0002 = ISR - stratum 02: Hebrew religious-Female
HRV0002 = HRV - stratum 02: Vocational-industrial-crafts programme
MEX0002 = MEX - stratum 02: Lower Secondary / Public / Moderately small
QCY0002 = QCY - stratum 02: Mixed ISCED / General / Public
URY0002 = URY - stratum 02: Public General Secondary Schools & Military School/Mixed
ITA0102 = ITA - stratum 02: Bolzano / Istituto Tecnico
CHE0102 = CHE - stratum 02: German, ISCED 2, Non-Urban
QCI0102 = QCI - stratum 02: Beijing / City / Academic / ISCED3
BEL0102 = BEL - stratum 02: Flanders/Gen Ed only/private subsidized/ISCED3
VNM0102 = VNM - stratum 02: Northern Vietnam / >50% public funding / Rural
CAN0102 = CAN - stratum 02: prov 10 Fr.& Eng. 3 to 21
BRN0102 = BRN - stratum 02: Ministry of Ed / Mixed ISCED
SVN0102 = SVN - stratum 02: GIMs = gymnasia specialist
TAP0102 = TAP - stratum 02: Junior high (1)/Public(1)/Suburban(2)
LTU0102 = LTU - stratum 02: Lithuanian / Capital / basic
LUX0102 = LUX - stratum 02: 2: ESG government-public
KAZ0102 = KAZ - stratum 02: non-intellectual / Almaty city
QAZ0102 = QAZ - stratum 02: Urban/Azerbaijani/Private
SVN1102 = SVN - stratum 02: GIMs = gymnasia specialist
GBR1102 = QUK - stratum 02: England_maintained non-selective_North
FRA0202 = FRA - stratum 02: Métropolitaine Collège LS
ALB0202 = ALB - stratum 02: Urban / North / Private
SWE0202 = SWE - stratum 02: PUB/ LOWER SEC/LARGE CITIES
CHL0202 = CHL - stratum 02: MUNICIPAL / PRIMARY&SECONDARY / HS
BRN0202 = BRN - stratum 02: Ministry of Ed / Mixed ISCED
SVN0202 = SVN - stratum 02: GIMs = gymnasia specialist
KOR0202 = KOR - stratum 02: Upper Secondary/General
RUS0202 = RUS - stratum 02: Republic of Bashkortostan
MYS0202 = MYS - stratum 02: MOE Religious School/Other States
KAZ0202 = KAZ - stratum 02: non-intellectual / Almaty city
SVN1202 = SVN - stratum 02: GIMs = gymnasia specialist
BRN0302 = BRN - stratum 02: Ministry of Ed / Mixed ISCED
KOR0302 = KOR - stratum 02: Upper Secondary/General
TUR0302 = TUR - stratum 02: Science High School - A
KAZ0302 = KAZ - stratum 02: non-intellectual / Almaty city
SVN0402 = SVN - stratum 02: GIMs = gymnasia specialist
SVN0602 = SVN - stratum 02: GIMs = gymnasia specialist
SVN0702 = SVN - stratum 02: GIMs = gymnasia specialist
SVN0802 = SVN - stratum 02: GIMs = gymnasia specialist
SVN0902 = SVN - stratum 02: GIMs = gymnasia specialist
MDA0012 = MDA - stratum 12: Russian / Big city / ISCED3
MKD0012 = MKD - stratum 12: ISCED3/Macedonian/Vocational
BIH0012 = BIH - stratum 12: Regija Banja Luka/ISCED 3
LBN0012 = LBN - stratum 12: 12. MIXED / Private / Rural
ISR0012 = ISR - stratum 12: Apprenticeship institutions – Arabic
PRT0012 = PRT - stratum 12: Beiras e Serra da Estrela
MEX0012 = MEX - stratum 12: Upper Secondary / Private / Small
QCY0012 = QCY - stratum 12: ISCED3 / Mixed / Public
BEL0112 = BEL - stratum 12: Flanders/Gen Ed and other type/community/Mixed ISCED
TAP0112 = TAP - stratum 12: Regular senior secondary (2)/Private(2)/Rural(3)
TUR0112 = TUR - stratum 12: Anatolian High School- E
LTU0112 = LTU - stratum 12: Lithuanian / town / other
KAZ0112 = KAZ - stratum 12: non-intellectual / Mangystauskaya oblast
FRA0212 = FRA - stratum 12: Guadeloupe/Guyane/Martinique VSS
ALB0212 = ALB - stratum 12: Rural / South / Private
CHE0212 = CHE - stratum 12: French, ISCED 3, Non-Urban
CAN0212 = CAN - stratum 12: prov 11 Fr.& Eng. 3 to 21
KAZ0212 = KAZ - stratum 12: non-intellectual / Mangystauskaya oblast
CHL0312 = CHL - stratum 12: SUBSIDIZED / SECONDARY / HS-TP
VNM0312 = VNM - stratum 12: Southern Vietnam / >50% public funding / Rural
KAZ0312 = KAZ - stratum 12: non-intellectual / Mangystauskaya oblast
ITA0412 = ITA - stratum 12: Sardegna / Istituto Tecnico
COL0412 = COL - stratum 12: Rest of the Country / Private
ARG0512 = ARG - stratum 12: Santa Fe-Private schools
BIH0022 = BIH - stratum 22: Regija Prijedor/ISCED 3
ISL0022 = ISL - stratum 22: Norðurland vestra / 9-16
BEL0222 = BEL - stratum 22: French com/Regular/ISCED2
TAP0222 = TAP - stratum 22: Comprehensive senior secondary (4)/Private(2)/Urban(1)
GBR1222 = QUK - stratum 22: Northern Ireland_controlled grammar_All regions
TUR0322 = TUR - stratum 22: Anatolian Imam and Preacher High School - E
ITA0622 = ITA - stratum 22: Others / Istituto Tecnico
BIH0032 = BIH - stratum 32: Zeničko-dobojski kanton/ISCED 3
QCI0232 = QCI - stratum 32: Shanghai / Rural area / Academic / ISCED3
TUR0232 = TUR - stratum 32: Vocational and Technical Anatolian High School - F
GBR1232 = QUK - stratum 32: Northern Ireland_voluntary grammar_Southern
TAP0332 = TAP - stratum 32: Five-year junior college (6)/Public(1)/Suburban(2)
ITA0732 = ITA - stratum 32: Basilicata / Istituto Tecnico
ITA0742 = ITA - stratum 42: Abruzzo / Istituto Professionale
RUS5252 = RUS - stratum 52: Nizhny Novgorod Region
ITA0752 = ITA - stratum 52: Marche / Istituto Professionale
QCI0462 = QCI - stratum 62: Zhejiang / Town / Academic / ISCED3
MDA0003 = MDA - stratum 03: Romanian / Big city / ISCED3
MAC0003 = MAC - stratum 03: Government, Technical-Vocational, Chinese
HKG0003 = HKG - stratum 03: Private or International
BIH0003 = BIH - stratum 03: Brčko distrikt/ISCED 2
CRI0003 = CRI - stratum 03: Urban public technical
IRL0003 = IRL - stratum 03: Community-comp/86 or more
LBN0003 = LBN - stratum 03: 3. ISCED2AG / Private / Urban
FIN0003 = FIN - stratum 03: Southern Finland - urban
MEX0003 = MEX - stratum 03: Lower Secondary / Public / Small
QCY0003 = QCY - stratum 03: Mixed ISCED / General / Private
URY0003 = URY - stratum 03: Public General Secondary Schools & Military School/Upper secondary only
SVN1003 = SVN - stratum 03: SSI = technical educational programmes
BRA0103 = BRA - stratum 03: North,Public Municipal
ITA0103 = ITA - stratum 03: Bolzano / Istituto Professionale
CHE0103 = CHE - stratum 03: German, Mixed, Urban Core Area
QCI0103 = QCI - stratum 03: Beijing / City / Academic / Mixed
BEL0103 = BEL - stratum 03: Flanders/Gen Ed only/private subsidized/Mixed ISCED
VNM0103 = VNM - stratum 03: Northern Vietnam / >50% public funding / Remote area
CAN0103 = CAN - stratum 03: prov 10 Fr.& Eng. 22 to 41
BRN0103 = BRN - stratum 03: Ministry of Ed/ ISCED 3 only
SVN0103 = SVN - stratum 03: SSI = technical educational programmes
TAP0103 = TAP - stratum 03: Junior high (1)/Public(1)/Rural(3)
LTU0103 = LTU - stratum 03: Lithuanian / Capital / progymnasium
LUX0103 = LUX - stratum 03: 3: ESC+ESG government-public
KAZ0103 = KAZ - stratum 03: non-intellectual / Akmolinskaya oblast
SVN1103 = SVN - stratum 03: SSI = technical educational programmes
GBR1103 = QUK - stratum 03: England_maintained non-selective_Midlands
FRA0203 = FRA - stratum 03: Métropolitaine Lycée PRO LS
ALB0203 = ALB - stratum 03: Urban / Center / Public
ARG0203 = ARG - stratum 03: 24 Dept. of Buenos Aires-Public schools (PBA)
CHL0203 = CHL - stratum 03: MUNICIPAL / PRIMARY&SECONDARY / HS-TP
SVN0203 = SVN - stratum 03: SSI = technical educational programmes
MYS0203 = MYS - stratum 03: MOE Technical School/Other States
KAZ0203 = KAZ - stratum 03: non-intellectual / Akmolinskaya oblast
SVN1203 = SVN - stratum 03: SSI = technical educational programmes
BRN0303 = BRN - stratum 03: Ministry of Ed/ ISCED 3 only
SVN0303 = SVN - stratum 03: SSI = technical educational programmes
TUR0303 = TUR - stratum 03: Science High School - B
KAZ0303 = KAZ - stratum 03: non-intellectual / Akmolinskaya oblast
SVN0403 = SVN - stratum 03: SSI = technical educational programmes
KOR0403 = KOR - stratum 03: Upper Secondary/Vocational
SVN0503 = SVN - stratum 03: SSI = technical educational programmes
SVN0603 = SVN - stratum 03: SSI = technical educational programmes
SVN0703 = SVN - stratum 03: SSI = technical educational programmes
SVN0803 = SVN - stratum 03: SSI = technical educational programmes
SVN0903 = SVN - stratum 03: SSI = technical educational programmes
MDA0013 = MDA - stratum 13: Russian / Urban / Mixed
BIH0013 = BIH - stratum 13: Regija Bijeljina/ISCED 2
DOM0013 = DOM - stratum 13: Private/Urban & Rural/ISCED3
ESP9013 = ESP - stratum 13: Castile and Leon, public
QCI0113 = QCI - stratum 13: Beijing / Rural area / Academic / ISCED2
BEL0113 = BEL - stratum 13: Flanders/Tech or Voc/private subsidized/ISCED2
TUR0113 = TUR - stratum 13: Anatolian High School- F
LTU0113 = LTU - stratum 13: Lithuanian / village / Gymnasium
KAZ0113 = KAZ - stratum 13: non-intellectual / South-Kazakhstan oblast
GBR1113 = QUK - stratum 13: England_academy_Greater London
FRA0213 = FRA - stratum 13: La Réunion Lycée GT LS
CAN0213 = CAN - stratum 13: prov 11 Fr.& Eng. 22 to 41
TAP0213 = TAP - stratum 13: Skill-based senior secondary (3)/Public(1)/Urban(1)
CHE0313 = CHE - stratum 13: Italian, ISCED 2, Urban Core Area
CHL0313 = CHL - stratum 13: SUBSIDIZED / SECONDARY / TP
VNM0313 = VNM - stratum 13: Southern Vietnam / >50% public funding / Remote area
KAZ0313 = KAZ - stratum 13: non-intellectual / South-Kazakhstan oblast
BRA0413 = BRA - stratum 13: Southeast,Public Federal
ITA0413 = ITA - stratum 13: Sardegna / Istituto Professionale
MDA0023 = MDA - stratum 23: Mixed / Urban / ISCED2
BIH0023 = BIH - stratum 23: Regija Sarajevsko-romanijska/ISCED 2
ISL0023 = ISL - stratum 23: Norðurland vestra /17-35
QCI0223 = QCI - stratum 23: Shanghai / City / Vocational / ISCED3
BEL0223 = BEL - stratum 23: French com/Regular/ISCED3/Academic only
TAP0223 = TAP - stratum 23: Comprehensive senior secondary (4)/Private(2)/Suburban(2)
GBR1223 = QUK - stratum 23: Northern Ireland_controlled non-grammar_Belfast
TUR0323 = TUR - stratum 23: Anatolian Imam and Preacher High School - F
ITA0623 = ITA - stratum 23: Others / Istituto Professionale
BIH0033 = BIH - stratum 33: Županija posavska/ISCED 2
UKR0033 = UKR - stratum 33: Rural/ Ivano-Frankivsk
QCI0233 = QCI - stratum 33: Shanghai / Rural area / Academic / Mixed
TUR0233 = TUR - stratum 33: Vocational and Technical Anatolian High School - G
GBR1233 = QUK - stratum 33: Northern Ireland_catholic and other maintained_Belfast
TAP0333 = TAP - stratum 33: Five-year junior college (6)/Public(1)/Rural(3)
ITA0733 = ITA - stratum 33: Basilicata / Istituto Professionale
QCI0343 = QCI - stratum 43: Jiangsu / Town / Academic / ISCED2
ITA0743 = ITA - stratum 43: Abruzzo / Scuola media
QCI0353 = QCI - stratum 53: Jiangsu / Rural area / Vocational / ISCED3
QCI0463 = QCI - stratum 63: Zhejiang / Town / Academic / Mixed
MDA0004 = MDA - stratum 04: Romanian / Urban / Mixed
MAC0004 = MAC - stratum 04: Private-in-Net, Grammar-International, Chinese
BIH0004 = BIH - stratum 04: Brčko distrikt/ISCED 3
CRI0004 = CRI - stratum 04: Rural public technical
LBN0004 = LBN - stratum 04: 4. ISCED2AG / Private / Rural
FIN0004 = FIN - stratum 04: Southern Finland - rural
GBR0004 = QSC - stratum 04: pub fund-second highest
BLR0004 = BLR - stratum 04: Urban/Prof Tech College
HRV0004 = HRV - stratum 04: Art-vocational programme
MEX0004 = MEX - stratum 04: Lower Secondary / Private / Large
URY0004 = URY - stratum 04: Private General Secondary Schools/Lower secondary only
SVN1004 = SVN - stratum 04: SPI = vocational of medium duration
CHE0104 = CHE - stratum 04: German, Mixed, Non-Urban
VNM0104 = VNM - stratum 04: Northern Vietnam / <50% public funding / Urban
CAN0104 = CAN - stratum 04: prov 10 Fr.& Eng. 42 to …
SVN0104 = SVN - stratum 04: SPI = vocational of medium duration
TAP0104 = TAP - stratum 04: Junior high (1)/Private(2)/Urban(1)
DEU0104 = DEU - stratum 04: NOR / Brandenburg (BB)
LTU0104 = LTU - stratum 04: Lithuanian / Capital / other
LUX0104 = LUX - stratum 04: 4: ESG government-private
KAZ0104 = KAZ - stratum 04: non-intellectual / Aktubinskaya oblast
SVN1104 = SVN - stratum 04: SPI = vocational of medium duration
GBR1104 = QUK - stratum 04: England_maintained non-selective_South
FRA0204 = FRA - stratum 04: Métropolitaine Lycée agricole LS
ITA0204 = ITA - stratum 04: Bolzano / Scuola media
ALB0204 = ALB - stratum 04: Urban / Center / Private
ARG0204 = ARG - stratum 04: 24 Dept. of Buenos Aires-Private schools (PBA)
CHL0204 = CHL - stratum 04: MUNICIPAL / PRIMARY&SECONDARY / TP
COL0204 = COL - stratum 04: Manizales / Urban-Public
SVN0204 = SVN - stratum 04: SPI = vocational of medium duration
MYS0204 = MYS - stratum 04: MOE Fully Residential School
KAZ0204 = KAZ - stratum 04: non-intellectual / Aktubinskaya oblast
QAZ0204 = QAZ - stratum 04: Suburban/Azerbaijani/Public
SVN1204 = SVN - stratum 04: SPI = vocational of medium duration
SVN0304 = SVN - stratum 04: SPI = vocational of medium duration
TUR0304 = TUR - stratum 04: Science High School - C
KAZ0304 = KAZ - stratum 04: non-intellectual / Aktubinskaya oblast
SVN0404 = SVN - stratum 04: SPI = vocational of medium duration
KOR0404 = KOR - stratum 04: Mixed School Level/General
SVN0504 = SVN - stratum 04: SPI = vocational of medium duration
SVN0604 = SVN - stratum 04: SPI = vocational of medium duration
SVN0704 = SVN - stratum 04: SPI = vocational of medium duration
SVN0804 = SVN - stratum 04: SPI = vocational of medium duration
SVN0904 = SVN - stratum 04: SPI = vocational of medium duration
MDA0014 = MDA - stratum 14: Russian / Urban / ISCED2
BIH0014 = BIH - stratum 14: Regija Bijeljina/ISCED 3
ESP9014 = ESP - stratum 14: Castile and Leon, private
QCI0114 = QCI - stratum 14: Beijing / Rural area / Academic / ISCED3
BEL0114 = BEL - stratum 14: Flanders/Tech or Voc/private subsidized/ISCED3
TUR0114 = TUR - stratum 14: Anatolian High School- G
LTU0114 = LTU - stratum 14: Lithuanian / village / basic
KAZ0114 = KAZ - stratum 14: non-intellectual / Pavlodarskaya oblast
FRA0214 = FRA - stratum 14: La Réunion Collège LS
CAN0214 = CAN - stratum 14: prov 11 Fr.& Eng. 42 to …
TAP0214 = TAP - stratum 14: Skill-based senior secondary (3)/Public(1)/Suburban(2)
DEU0214 = DEU - stratum 14: NOR / Sachsen-Anhalt (ST)
KAZ0214 = KAZ - stratum 14: non-intellectual / Pavlodarskaya oblast
CHE0314 = CHE - stratum 14: Italian, ISCED 2, Non-Urban
VNM0314 = VNM - stratum 14: Southern Vietnam / <50% public funding / Urban
KAZ0314 = KAZ - stratum 14: non-intellectual / Pavlodarskaya oblast
GBR1314 = QUK - stratum 14: Wales_maintained_North Wales/GwE
BRA0414 = BRA - stratum 14: Southeast,Public State
ITA0414 = ITA - stratum 14: Sardegna / Scuola media
CHL0414 = CHL - stratum 14: PRIVATE / PRIM&SEC , SEC / HS
RUS1414 = RUS - stratum 14: Republic of Sakha (Yakutia)
MDA0024 = MDA - stratum 24: Mixed / Urban / ISCED3
BIH0024 = BIH - stratum 24: Regija Sarajevsko-romanijska/ISCED 3
ISL0024 = ISL - stratum 24: Norðurland vestra / >35
PRT0024 = PRT - stratum 24: Terras de Trás-os-Montes
BEL0224 = BEL - stratum 24: French com/Regular/ISCED3/Mixed
TAP0224 = TAP - stratum 24: Comprehensive senior secondary (4)/Private(2)/Rural(3)
GBR1224 = QUK - stratum 24: Northern Ireland_controlled non-grammar_Western
TUR0324 = TUR - stratum 24: Anatolian Imam and Preacher High School - G
BIH0034 = BIH - stratum 34: Županija posavska/ISCED 3
ESP9034 = ESP - stratum 34: Basque Country, public, AB
TUR0234 = TUR - stratum 34: Vocational and Technical Anatolian High School - H
GBR1234 = QUK - stratum 34: Northern Ireland_catholic and other maintained_Western
TAP0334 = TAP - stratum 34: Five-year junior college (6)/Private(2)/Urban(1)
ITA0734 = ITA - stratum 34: Basilicata / Scuola media
QCI0344 = QCI - stratum 44: Jiangsu / Town / Academic / ISCED3
ITA0744 = ITA - stratum 44: Abruzzo / Centro di Formazione Professionale
ITA0754 = ITA - stratum 54: Marche / Centro di Formazione Professionale
MDA0005 = MDA - stratum 05: Romanian / Urban / ISCED2
MAC0005 = MAC - stratum 05: Private-in-Net, Grammar-International, Chinese and English
NLD0005 = NLD - stratum 05: 5_PRO/VMBO-BL/KL/GL/TL
BIH0005 = BIH - stratum 05: Hercegbosanska županija/ISCED 2
ISL0005 = ISL - stratum 05: Nágrenni Reykjavíkur / 1-8
LBN0005 = LBN - stratum 05: 5. ISCED3AG / Public / Urban
FIN0005 = FIN - stratum 05: Western Finland - urban
HUN0005 = HUN - stratum 05: Vocational secondary school
GEO0005 = GEO - stratum 05: Small city and town / Private
BLR0005 = BLR - stratum 05: Urban/Secondary Special Educational
SAU0005 = SAU - stratum 05: Almadina Almunawareh/FEMALE
MEX0005 = MEX - stratum 05: Lower Secondary / Private / Moderately small
URY0005 = URY - stratum 05: Private General Secondary Schools/Mixed
SVN1005 = SVN - stratum 05: NPI = vocational of short duration
ITA0105 = ITA - stratum 05: Bolzano / Centro di Formazione Professionale
ALB0105 = ALB - stratum 05: Urban / South / Public
CHE0105 = CHE - stratum 05: German, ISCED 3, Urban Core Area
ARE0105 = ARE - stratum 05: Abu Dhabi / Public / Other
QCI0105 = QCI - stratum 05: Beijing / City / Vocational / ISCED3
BEL0105 = BEL - stratum 05: Flanders/Gen Ed only/community/ISCED3
VNM0105 = VNM - stratum 05: Northern Vietnam / <50% public funding / Rural and Remote area
BRN0105 = BRN - stratum 05: Ministry of Relig. Aff / Mixed ISCED
TAP0105 = TAP - stratum 05: Junior high (1)/Private(2)/Suburban(2)
LTU0105 = LTU - stratum 05: Lithuanian / City / Gymnasium
LUX0105 = LUX - stratum 05: 5: ESC+ESG government-private
KAZ0105 = KAZ - stratum 05: non-intellectual / Almatinskaya oblast
SVN1105 = SVN - stratum 05: NPI = vocational of short duration
GBR1105 = QUK - stratum 05: England_maintained non-selective_Greater London
BRA0205 = BRA - stratum 05: Northeast,Public Federal
SWE0205 = SWE - stratum 05: INDEP/ LOWER SEC/ METRO
ARG0205 = ARG - stratum 05: Rest of Buenos Aires-Public schools (PBA)
CHL0205 = CHL - stratum 05: MUNICIPAL / SECONDARY / HS
COL0205 = COL - stratum 05: Manizales / Rural-Public
PAN0205 = PAN - stratum 05: Non-Regular/Urban/Public
SVN0205 = SVN - stratum 05: NPI = vocational of short duration
MYS0205 = MYS - stratum 05: non-MOE MARA Junior Science College/Other States
QAZ0205 = QAZ - stratum 05: Suburban/Azerbaijani/Private
SVN1205 = SVN - stratum 05: NPI = vocational of short duration
BRN0305 = BRN - stratum 05: Ministry of Relig. Aff / Mixed ISCED
SVN0305 = SVN - stratum 05: NPI = vocational of short duration
TUR0305 = TUR - stratum 05: Social Sciences High School - A
KAZ0305 = KAZ - stratum 05: non-intellectual / Almatinskaya oblast
SVN0405 = SVN - stratum 05: NPI = vocational of short duration
SVN0505 = SVN - stratum 05: NPI = vocational of short duration
SVN0605 = SVN - stratum 05: NPI = vocational of short duration
SVN0705 = SVN - stratum 05: NPI = vocational of short duration
SVN0805 = SVN - stratum 05: NPI = vocational of short duration
SVN0905 = SVN - stratum 05: NPI = vocational of short duration
MDA0015 = MDA - stratum 15: Russian / Urban / ISCED3
MKD0015 = MKD - stratum 15: ISCED3/Mixed/Vocational
ESP9015 = ESP - stratum 15: Castile – La Mancha, public
QCI0115 = QCI - stratum 15: Beijing / Rural area / Academic / Mixed
BEL0115 = BEL - stratum 15: Flanders/Tech or Voc/private subsidized/Mixed ISCED
TUR0115 = TUR - stratum 15: Anatolian High School- H
LTU0115 = LTU - stratum 15: Lithuanian / village / progymnasium
KAZ0115 = KAZ - stratum 15: non-intellectual / North-Kazakhstan oblast
FRA0215 = FRA - stratum 15: La Réunion Lycée PRO LS
ARE0215 = ARE - stratum 15: Dubai / Public / Other
TAP0215 = TAP - stratum 15: Skill-based senior secondary (3)/Public(1)/Rural(3)
DEU0215 = DEU - stratum 15: NOR / Schleswig-Holstein (SH)
KAZ0215 = KAZ - stratum 15: non-intellectual / North-Kazakhstan oblast
VNM0315 = VNM - stratum 15: Southern Vietnam / <50% public funding / Rural and Remote area
KAZ0315 = KAZ - stratum 15: non-intellectual / North-Kazakhstan oblast
GBR1315 = QUK - stratum 15: Wales_maintained_South West and Mid Wales/ERW
BRA0415 = BRA - stratum 15: Southeast,Public Municipal
ITA0415 = ITA - stratum 15: Sardegna / Centro di Formazione Professionale
RUS1515 = RUS - stratum 15: Republic of North Ossetia - Alania
ESP0815 = ESP - stratum 15: Castile – La Mancha, public
BIH0025 = BIH - stratum 25: Srednjobosanski kanton/Kanton Središnja Bosna/ISCED 2
ISL0025 = ISL - stratum 25: Norðurland eystra / 1-8
ESP9025 = ESP - stratum 25: Madrid, Bilingual Public
QCI0225 = QCI - stratum 25: Shanghai / Town / Academic / ISCED2
BEL0225 = BEL - stratum 25: French com/Regular/ISCED3/Vocational only
GBR1225 = QUK - stratum 25: Northern Ireland_controlled non-grammar_North Eastern
ARE0325 = ARE - stratum 25: Sharjah / Public / Other
TAP0325 = TAP - stratum 25: Comprehensive junior-senior high (5)/Public(1)/Urban(1)
TUR0325 = TUR - stratum 25: Anatolian Imam and Preacher High School - H
ITA0625 = ITA - stratum 25: Others / Centro di Formazione Professionale
BIH0035 = BIH - stratum 35: Županija zapadnohercegovačka/ISCED 2
ESP9035 = ESP - stratum 35: Basque Country, public, D
TUR0235 = TUR - stratum 35: Vocational and Technical Anatolian High School - I
GBR1235 = QUK - stratum 35: Northern Ireland_catholic and other maintained_North Eastern
TAP0335 = TAP - stratum 35: Five-year junior college (6)/Private(2)/Suburban(2)
ARE0435 = ARE - stratum 35: Ajman / Public / Other
ITA0735 = ITA - stratum 35: Friuli-Venezia Giulia / Liceo
QCI0345 = QCI - stratum 45: Jiangsu / Town / Academic / Mixed
ARE0545 = ARE - stratum 45: Umm Al Quwain / Public / Other
QCI0455 = QCI - stratum 55: Zhejiang / City / Academic / ISCED2
ARE0655 = ARE - stratum 55: Ras Al Khaimah / Public / Other
QCI0465 = QCI - stratum 65: Zhejiang / Town / Vocational / ISCED3
ARE0765 = ARE - stratum 65: Fujairah / Public / Other
RUS7575 = RUS - stratum 75: Trans-Baikal Territory
MDA0006 = MDA - stratum 06: Romanian / Urban / ISCED3
MAC0006 = MAC - stratum 06: Private-in-Net, Grammar-International, English
BIH0006 = BIH - stratum 06: Hercegbosanska županija/ISCED 3
ISL0006 = ISL - stratum 06: Nágrenni Reykjavíkur / 9-16
LBN0006 = LBN - stratum 06: 6. ISCED3AG / Public / Rural
FIN0006 = FIN - stratum 06: Western Finland - rural
SVN0006 = SVN - stratum 06: OS = elementary school
GEO0006 = GEO - stratum 06: Small city and town / Public
SAU0006 = SAU - stratum 06: Almadina Almunawareh/MALE
HRV0006 = HRV - stratum 06: Primary schools (lower secondary education)
MEX0006 = MEX - stratum 06: Lower Secondary / Private / Small
URY0006 = URY - stratum 06: Private General Secondary Schools/Upper secondary only
CHE0106 = CHE - stratum 06: German, ISCED 3, Non-Urban
ARE0106 = ARE - stratum 06: Abu Dhabi / Private / MoE
BEL0106 = BEL - stratum 06: Flanders/Gen Ed only/community/Mixed ISCED
TAP0106 = TAP - stratum 06: Junior high (1)/Private(2)/Rural(3)
LTU0106 = LTU - stratum 06: Lithuanian / City / basic
LUX0106 = LUX - stratum 06: 6: Government independent
KAZ0106 = KAZ - stratum 06: non-intellectual / Atyrauskaya oblast
GBR1106 = QUK - stratum 06: England_independent_North
BRA0206 = BRA - stratum 06: Northeast,Public State
ALB0206 = ALB - stratum 06: Urban / South / Private
SWE0206 = SWE - stratum 06: INDEP/ LOWER SEC/ LARGE CITIES
ARG0206 = ARG - stratum 06: Rest of Buenos Aires-Private schools (PBA)
CHL0206 = CHL - stratum 06: MUNICIPAL / SECONDARY / HS-TP
VNM0206 = VNM - stratum 06: Central Vietnam / >50% public funding / Urban
PAN0206 = PAN - stratum 06: Non-Regular/Urban/Private
MYS0206 = MYS - stratum 06: non-MOE Other Schools/Other States
QAZ0206 = QAZ - stratum 06: Suburban/Russian/Public
BRN0306 = BRN - stratum 06: Ministry of Relig. Aff / ISCED 3 only
TUR0306 = TUR - stratum 06: Social Sciences High School - B
KAZ0306 = KAZ - stratum 06: non-intellectual / Atyrauskaya oblast
MDA0016 = MDA - stratum 16: Russian / Rural / Mixed
MKD0016 = MKD - stratum 16: ISCED3/Albanian/General
ESP9016 = ESP - stratum 16: Castile – La Mancha, private
BEL0116 = BEL - stratum 16: Flanders/Tech or Voc/community/ISCED2
TUR0116 = TUR - stratum 16: Anatolian High School- I
LTU0116 = LTU - stratum 16: Lithuanian / village / other
KAZ0116 = KAZ - stratum 16: non-intellectual / East-Kazakhstan oblast
FRA0216 = FRA - stratum 16: La Réunion Lycée agricole LS
ARE0216 = ARE - stratum 16: Dubai / Private / MoE
TAP0216 = TAP - stratum 16: Skill-based senior secondary (3)/Private(2)/Urban(1)
KAZ0216 = KAZ - stratum 16: non-intellectual / East-Kazakhstan oblast
KAZ0316 = KAZ - stratum 16: non-intellectual / East-Kazakhstan oblast
GBR1316 = QUK - stratum 16: Wales_maintained_Central South Wales
ESP0816 = ESP - stratum 16: Castile – La Mancha, private
MDA0026 = MDA - stratum 26: Mixed / Rural / ISCED2
BIH0026 = BIH - stratum 26: Srednjobosanski kanton/Kanton Središnja Bosna/ISCED 3
ESP9026 = ESP - stratum 26: Madrid, Non-Bilingual Public
QCI0226 = QCI - stratum 26: Shanghai / Town / Academic / ISCED3
BEL0226 = BEL - stratum 26: French com/Regular/ Mixed ISCED/Academic only
GBR1226 = QUK - stratum 26: Northern Ireland_controlled non-grammar_South Eastern
ARE0326 = ARE - stratum 26: Sharjah / Private / MoE
TAP0326 = TAP - stratum 26: Comprehensive junior-senior high (5)/Public(1)/Suburban(2)
TUR0326 = TUR - stratum 26: Anatolian Sport High School/ Anatolian Fine Arts High School
BIH0036 = BIH - stratum 36: Županija zapadnohercegovačka/ISCED 3
ESP9036 = ESP - stratum 36: Basque Country, private, AB
TUR0236 = TUR - stratum 36: Multi-Programme Anatolian High School -A
GBR1236 = QUK - stratum 36: Northern Ireland_catholic and other maintained_South Eastern
TAP0336 = TAP - stratum 36: Five-year junior college (6)/Private(2)/Rural(3)
ARE0436 = ARE - stratum 36: Ajman / Private / MoE
ITA0736 = ITA - stratum 36: Friuli-Venezia Giulia / Istituto Tecnico
ARE0546 = ARE - stratum 46: Umm Al Quwain / Private / MoE
ITA0746 = ITA - stratum 46: Liguria / Istituto Tecnico
QCI0456 = QCI - stratum 56: Zhejiang / City / Academic / ISCED3
ARE0656 = ARE - stratum 56: Ras Al Khaimah / Private / MoE
ITA0756 = ITA - stratum 56: Valle d'Aosta / Istituto Tecnico
ARE0766 = ARE - stratum 66: Fujairah / Private / MoE
RUS8686 = RUS - stratum 86: Khanty-Mansi Autonomous Area – Yugra
MDA0007 = MDA - stratum 07: Romanian / Rural / Mixed
MAC0007 = MAC - stratum 07: Private-in-Net, Technical-Vocational, Chinese
MKD0007 = MKD - stratum 07: ISCED2/Albanian/General
BIH0007 = BIH - stratum 07: Hercegovačko-neretvanska županija/kanton/ISCED 2
ISL0007 = ISL - stratum 07: Nágrenni Reykjavíkur / 17-35
LBN0007 = LBN - stratum 07: 7. ISCED3AG / Private / Urban
FIN0007 = FIN - stratum 07: Northern & Eastern Finland - urban
SVN0007 = SVN - stratum 07: IO = adult educational programmes
PRT0007 = PRT - stratum 07: Área Metropolitana de Lisboa
MEX0007 = MEX - stratum 07: Upper Secondary / Public / Large
URY0007 = URY - stratum 07: Public Technical Secondary Schools/Lower secondary only
ESP9007 = ESP - stratum 07: Balearic Islands, public
ALB0107 = ALB - stratum 07: Rural / North / Public
ARE0107 = ARE - stratum 07: Abu Dhabi / Private / US
QCI0107 = QCI - stratum 07: Beijing / Town / Academic / ISCED2
BEL0107 = BEL - stratum 07: Flanders/Gen Ed and other type/private subsidized/ISCED2
TAP0107 = TAP - stratum 07: Regular senior secondary (2)/Public(1)/Urban(1)
LTU0107 = LTU - stratum 07: Lithuanian / City / progymnasium
KAZ0107 = KAZ - stratum 07: non-intellectual / West-Kazakhstan oblast
GBR1107 = QUK - stratum 07: England_independent_Midlands
BRA0207 = BRA - stratum 07: Northeast,Public Municipal
FRA0207 = FRA - stratum 07: Guadeloupe/Guyane/Martinique Lycée GT LS
CHE0207 = CHE - stratum 07: French, ISCED 2, Urban Core Area
SWE0207 = SWE - stratum 07: INDEP/ LOWER SEC/ OTHER
CHL0207 = CHL - stratum 07: MUNICIPAL / SECONDARY / TP
VNM0207 = VNM - stratum 07: Central Vietnam / >50% public funding / Rural
PAN0207 = PAN - stratum 07: Non-Regular/Rural/Public
MYS0207 = MYS - stratum 07: Perlis except “MOE Fully Residential Schools”
KAZ0207 = KAZ - stratum 07: non-intellectual / West-Kazakhstan oblast
QAZ0207 = QAZ - stratum 07: Suburban/Russian/Private
ITA0307 = ITA - stratum 07: Toscana / Istituto Tecnico
ARG0307 = ARG - stratum 07: Tucumán-Public schools
COL0307 = COL - stratum 07: Medellin / Urban-Public
TUR0307 = TUR - stratum 07: Social Sciences High School - C
KAZ0307 = KAZ - stratum 07: non-intellectual / West-Kazakhstan oblast
ESP0407 = ESP - stratum 07: Balearic Islands, public
MDA0017 = MDA - stratum 17: Russian / Rural / ISCED2
BEL0117 = BEL - stratum 17: Flanders/Tech or Voc/community/ISCED3
TUR0117 = TUR - stratum 17: Anatolian High School- J
ARE0217 = ARE - stratum 17: Dubai / Private / US
TAP0217 = TAP - stratum 17: Skill-based senior secondary (3)/Private(2)/Suburban(2)
CHE0317 = CHE - stratum 17: Italian, ISCED 3, Urban Core Area
GBR1317 = QUK - stratum 17: Wales_maintained_South East Wales
BRA0517 = BRA - stratum 17: Middle-West,Public Federal
ITA0517 = ITA - stratum 17: Trento / Istituto Tecnico
BIH0027 = BIH - stratum 27: Tuzlanski kanton/ISCED 2
ISL0027 = ISL - stratum 27: Norðurland eystra / 17-35
ESP9027 = ESP - stratum 27: Madrid, Bilingual Private (Publicly Funded)
QCI0227 = QCI - stratum 27: Shanghai / Town / Academic / Mixed
BEL0227 = BEL - stratum 27: French com/Regular/ Mixed ISCED/Mixed
TUR0227 = TUR - stratum 27: Vocational and Technical Anatolian High School - A
GBR1227 = QUK - stratum 27: Northern Ireland_controlled non-grammar_Southern
ARE0327 = ARE - stratum 27: Sharjah / Private / US
TAP0327 = TAP - stratum 27: Comprehensive junior-senior high (5)/Public(1)/Rural(3)
ITA0727 = ITA - stratum 27: Molise / Istituto Tecnico
ESP9037 = ESP - stratum 37: Basque Country, private, D
TUR0237 = TUR - stratum 37: Multi-Programme Anatolian High School -B
GBR1237 = QUK - stratum 37: Northern Ireland_catholic and other maintained_Southern
QCI0337 = QCI - stratum 37: Jiangsu / City / Academic / ISCED2
ARE0437 = ARE - stratum 37: Ajman / Private / US
ITA0737 = ITA - stratum 37: Friuli-Venezia Giulia / Istituto Professionale
QCI0347 = QCI - stratum 47: Jiangsu / Town / Vocational / ISCED3
ARE0547 = ARE - stratum 47: Umm Al Quwain / Private / US
ITA0747 = ITA - stratum 47: Liguria / Istituto Professionale
QCI0457 = QCI - stratum 57: Zhejiang / City / Academic / Mixed
ARE0657 = ARE - stratum 57: Ras Al Khaimah / Private / US
ITA0757 = ITA - stratum 57: Valle d'Aosta / Istituto Professionale
QCI0467 = QCI - stratum 67: Zhejiang / Rural area / Academic / ISCED2
ARE0767 = ARE - stratum 67: Fujairah / Private / US
MDA9797 = Undisclosed STRATUM - Republic of Moldova
ARE9797 = Undisclosed STRATUM - United Arab Emirates
BIH9797 = Undisclosed STRATUM - Bosnia and Herzegovina
DOM9797 = Undisclosed STRATUM - Dominican Republic
RUS9797 = Undisclosed STRATUM - Russian Federation
MDA0008 = MDA - stratum 08: Romanian / Rural / ISCED2
MAC0008 = MAC - stratum 08: Private-not-in-Net, Grammar-International, Chinese
BIH0008 = BIH - stratum 08: Hercegovačko-neretvanska županija/kanton/ISCED 3
ISL0008 = ISL - stratum 08: Nágrenni Reykjavíkur / > 35
LBN0008 = LBN - stratum 08: 8. ISCED3AG / Private / Rural
FIN0008 = FIN - stratum 08: Northern & Eastern Finland - rural
UKR0008 = UKR - stratum 08: Urban/ Ivano-Frankivsk
ISR0008 = ISR - stratum 08: Hebrew Ultra-Orthodox – Female
PRT0008 = PRT - stratum 08: Área Metropolitana do Porto
MEX0008 = MEX - stratum 08: Upper Secondary / Public / Moderately small
QCY0008 = QCY - stratum 08: ISCED3 / General / Public
URY0008 = URY - stratum 08: Public Technical Secondary Schools/Mixed
ESP9008 = ESP - stratum 08: Balearic Islands, private
ARE0108 = ARE - stratum 08: Abu Dhabi / Private / UK
QCI0108 = QCI - stratum 08: Beijing / Town / Academic / ISCED3
BEL0108 = BEL - stratum 08: Flanders/Gen Ed and other type/private subsidized /ISCED3
BRN0108 = BRN - stratum 08: Private Schools / Mixed ISCED
TAP0108 = TAP - stratum 08: Regular senior secondary (2)/Public(1)/Suburban(2)
TUR0108 = TUR - stratum 08: Anatolian High School- A
DEU0108 = DEU - stratum 08: NOR / Mecklenburg-Vorpommern (MV)
LTU0108 = LTU - stratum 08: Lithuanian / City / other
KAZ0108 = KAZ - stratum 08: non-intellectual / Zhambylskaya oblast
GBR1108 = QUK - stratum 08: England_independent_South
FRA0208 = FRA - stratum 08: Guadeloupe/Guyane/Martinique Collège LS
ALB0208 = ALB - stratum 08: Rural / North / Private
CHE0208 = CHE - stratum 08: French, ISCED 2, Non-Urban
VNM0208 = VNM - stratum 08: Central Vietnam / >50% public funding / Remote area
PAN0208 = PAN - stratum 08: Non-Regular/Rural/Private
MYS0208 = MYS - stratum 08: Wilayah Persekutuan Putrajaya except “MOE Fully Residential Schools�
KAZ0208 = KAZ - stratum 08: non-intellectual / Zhambylskaya oblast
ITA0308 = ITA - stratum 08: Toscana / Istituto Professionale
ARG0308 = ARG - stratum 08: Tucumán-Private schools
CHL0308 = CHL - stratum 08: SUBSIDIZED / PRIMARY&SECONDARY / HS
COL0308 = COL - stratum 08: Medellin / Rural-Public
BRN0308 = BRN - stratum 08: Private Schools / Mixed ISCED
KAZ0308 = KAZ - stratum 08: non-intellectual / Zhambylskaya oblast
ESP0408 = ESP - stratum 08: Balearic Islands, private
MDA0018 = MDA - stratum 18: Russian / Rural / ISCED3
MKD0018 = MKD - stratum 18: ISCED3/Albanian/Vocational
PRT0018 = PRT - stratum 18: Região Autónoma da Madeira
BEL0118 = BEL - stratum 18: Flanders/Tech or Voc/community/Mixed ISCED
ARE0218 = ARE - stratum 18: Dubai / Private / UK
TAP0218 = TAP - stratum 18: Skill-based senior secondary (3)/Private(2)/Rural(3)
CHE0318 = CHE - stratum 18: Italian, ISCED 3, Non-Urban
TUR0318 = TUR - stratum 18: Anatolian Imam and Preacher High School - A
GBR1318 = QUK - stratum 18: Wales_independent_North Wales/GwE
BRA0518 = BRA - stratum 18: Middle-West,Public State
ITA0518 = ITA - stratum 18: Trento / Istituto Professionale
BIH0028 = BIH - stratum 28: Tuzlanski kanton/ISCED 3
ISL0028 = ISL - stratum 28: Norðurland eystra / > 35
ESP9028 = ESP - stratum 28: Madrid, Non-Bilingual Private (Publicly Funded)
TUR0228 = TUR - stratum 28: Vocational and Technical Anatolian High School - B
GBR1228 = QUK - stratum 28: Northern Ireland_voluntary grammar_Belfast
ARE0328 = ARE - stratum 28: Sharjah / Private / UK
TAP0328 = TAP - stratum 28: Comprehensive junior-senior high (5)/Private(2)/Urban(1)
ITA0728 = ITA - stratum 28: Molise / Istituto Professionale
TUR0238 = TUR - stratum 38: Multi-Programme Anatolian High School -C
GBR1238 = QUK - stratum 38: Northern Ireland_integrated (controlled integrated and grant maintained
QCI0338 = QCI - stratum 38: Jiangsu / City / Academic / ISCED3
ARE0438 = ARE - stratum 38: Ajman / Private / UK
ITA0738 = ITA - stratum 38: Friuli-Venezia Giulia / Scuola media
ITA0748 = ITA - stratum 48: Liguria / Scuola media
ARE0658 = ARE - stratum 58: Ras Al Khaimah / Private / UK
ITA0758 = ITA - stratum 58: Valle d'Aosta / Scuola media
QCI0468 = QCI - stratum 68: Zhejiang / Rural area / Academic / ISCED3
ARE0768 = ARE - stratum 68: Fujairah / Private / UK
MDA0009 = MDA - stratum 09: Romanian / Rural / ISCED3
MAC0009 = MAC - stratum 09: Private-not-in-Net, Grammar-International, English
BIH0009 = BIH - stratum 09: Kanton Sarajevo/ISCED 2
LBN0009 = LBN - stratum 09: 9. MIXED / Public / Urban
FIN0009 = FIN - stratum 09: Swedish speaking area - urban
GEO0009 = GEO - stratum 09: Remote village / Public
BLR0009 = BLR - stratum 09: Rural/Prof Tech College
ISR0009 = ISR - stratum 09: Hebrew Ultra-Orthodox – Male
MEX0009 = MEX - stratum 09: Upper Secondary / Public / Small
URY0009 = URY - stratum 09: Public Technical Secondary Schools/Upper secondary only
ESP9009 = ESP - stratum 09: Canary Islands, public
ALB0109 = ALB - stratum 09: Rural / Center / Public
ARE0109 = ARE - stratum 09: Abu Dhabi / Private / Indian
QCI0109 = QCI - stratum 09: Beijing / Town / Academic / Mixed
BEL0109 = BEL - stratum 09: Flanders/Gen Ed and other type/private subsidized /Mixed ISCED
TAP0109 = TAP - stratum 09: Regular senior secondary (2)/Public(1)/Rural(3)
TUR0109 = TUR - stratum 09: Anatolian High School- B
DEU0109 = DEU - stratum 09: NOR / Niedersachsen (NI)
LTU0109 = LTU - stratum 09: Lithuanian / town / Gymnasium
KAZ0109 = KAZ - stratum 09: non-intellectual / Karagandinskaya oblast
GBR1109 = QUK - stratum 09: England_independent_Greater London
FRA0209 = FRA - stratum 09: Guadeloupe/Guyane/Martinique Lycée PRO LS
CHE0209 = CHE - stratum 09: French, Mixed, Urban Core Area
SVK0209 = SVK - stratum 09: Others / Region 3_VÝCH
VNM0209 = VNM - stratum 09: Central Vietnam / <50% public funding / Urban
MYS0209 = MYS - stratum 09: Wilayah Persekutuan Labuan except “MOE Fully Residential Schools”
KAZ0209 = KAZ - stratum 09: non-intellectual / Karagandinskaya oblast
ITA0309 = ITA - stratum 09: Toscana / Scuola media
CHL0309 = CHL - stratum 09: SUBSIDIZED / PRIMARY&SECONDARY / HS-TP
KAZ0309 = KAZ - stratum 09: non-intellectual / Karagandinskaya oblast
ARG0409 = ARG - stratum 09: Córdoba-Public schools
ESP0509 = ESP - stratum 09: Canary Islands, public
MDA0019 = MDA - stratum 19: Mixed / Big city / Mixed
BIH0019 = BIH - stratum 19: Regija Hercegovina/ISCED 2
PRT0019 = PRT - stratum 19: Região Autónoma dos Açores
BEL0119 = BEL - stratum 19: Flanders/Special Ed/private subsidized
FRA0219 = FRA - stratum 19: Mayotte Lycée GT LS
ARE0219 = ARE - stratum 19: Dubai / Private / Indian
QCI0219 = QCI - stratum 19: Shanghai / City / Academic / ISCED2
TAP0219 = TAP - stratum 19: Comprehensive senior secondary (4)/Public(1)/Urban(1)
TUR0319 = TUR - stratum 19: Anatolian Imam and Preacher High School - B
GBR1319 = QUK - stratum 19: Wales_independent_South West and Mid Wales/ERW
LTU0419 = LTU - stratum 19: Russian, Polish / NA / NA
BRA0519 = BRA - stratum 19: Middle-West,Public Municipal
ARG0519 = ARG - stratum 19: Patagonia-Public schools
BIH0029 = BIH - stratum 29: Unsko-sanski kanton/ISCED 2
BEL0229 = BEL - stratum 29: French com/Part-time Vocational Ed
TUR0229 = TUR - stratum 29: Vocational and Technical Anatolian High School - C
GBR1229 = QUK - stratum 29: Northern Ireland_voluntary grammar_Western
ARE0329 = ARE - stratum 29: Sharjah / Private / Indian
TAP0329 = TAP - stratum 29: Comprehensive junior-senior high (5)/Private(2)/Suburban(2)
TUR0239 = TUR - stratum 39: Multi-Programme Anatolian High School -D
GBR1239 = QUK - stratum 39: Northern Ireland_independent_All regions
QCI0339 = QCI - stratum 39: Jiangsu / City / Academic / Mixed
ARE0439 = ARE - stratum 39: Ajman / Private / Indian
ITA0739 = ITA - stratum 39: Friuli-Venezia Giulia / Centro di Formazione Professionale
QCI0349 = QCI - stratum 49: Jiangsu / Rural area / Academic / ISCED2
ARE0549 = ARE - stratum 49: Umm Al Quwain / Private / Indian
ITA0749 = ITA - stratum 49: Liguria / Centro di Formazione Professionale
QCI0459 = QCI - stratum 59: Zhejiang / City / Vocational / ISCED3
ARE0659 = ARE - stratum 59: Ras Al Khaimah / Private / Indian
ITA0759 = ITA - stratum 59: Valle d'Aosta / Centro di Formazione Professionale
QCI0469 = QCI - stratum 69: Zhejiang / Rural area / Academic / Mixed
ARE0769 = ARE - stratum 69: Fujairah / Private / Indian

Stratum ID 7-character (cnt + region ID + original stratum ID)
1 = ZŠ
2 = VG
3 = G4
4 = SOŠ s mat.
5 = SOU bez mat.
6 = spec.

Ročník školní docházky
7 = Grade 7
8 = Grade 8
9 = Grade 9
10 = Grade 10
11 = Grade 11
12 = Grade 12
13 = Grade 13
96 = Ungraded
97 = Not Applicable
98 = Invalid
99 = Missing

Měsíc narození žáka
1 = leden
2 = únor
3 = březen
4 = duben
5 = květen
6 = červen
7 = červenec
8 = srpen
9 = září
10 = říjen
11 = listopad
12 = prosinec
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

Rok narození žáka
9995 = Valid Skip
9997 = Not Applicable
9998 = Invalid
9999 = No Response

Pohlaví žáka
1 = dívka
2 = chlapec
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

What is the <highest level of schooling> completed by your mother?
1 = ISCED level 3A
2 = ISCED level 3B, 3C
3 = ISCED level 2
4 = ISCED level 1
5 = She did not complete ISCED level 1
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

Does your mother have this qualification? <ISCED level 6> (incl. higher qualifications at level 5A in some countries)
1 = Yes
2 = No
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

What is the <highest level of schooling> completed by your father?
1 = ISCED level 3A
2 = ISCED level 3B, 3C
3 = ISCED level 2
4 = ISCED level 1
5 = He did not complete ISCED level 1
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

In your home: <Country-specific wealth item 1>
0620001 = Portugal : Cable TV or satellite dish-Yes
0040001 = Austria : a laptop/notebook/a tablet of your own-Yes
0591001 = Panama : Cable or satellite television-Yes
0422001 = Lebanon : Flat screen TV / plasma / LCD-Yes
0152001 = Chile : A second house (for vacation or weekend)-Yes
0372001 = Ireland : Your own MP3 player (e.g. iPod)-Yes
0792001 = Turkey : Air conditioning type heating-cooling system-Yes
0643001 = Russian Federation : musical instruments (e.g., violin, piano, synthesizer)-Yes
0504001 = Morocco : Personal electronic tablet-Yes
0604001 = Peru : video games (Playstation, Nintendo, Wii, etc.)-Yes
0704001 = VietNam : A set of flags (chess, chess, ...)-Yes
0804001 = Ukraine : Family heirlooms (antiques)-Yes
0344001 = Hong Kong (China) : Plasma TV / LCD TV (40' or above)-Yes
0784001 = United Arab Emirates : A laptop of your own-Yes
0056001 = Belgium : A home cinema installation (LCD or LED screen with home cinema system)-Yes
0756001 = Switzerland : Musical intrument (without recorder/flute)-Yes
0276001 = Germany : One or multiple music instruments-Yes
0827001 = United Kingdom (Excl. Scotland) : Dishwasher-Yes
0208001 = Denmark : A musical instrument (e.g. piano, guitar, violin)-Yes
0608001 = Philippines : Means of transportation (e.g. motorcycle, tricycle, jeepney, car, etc.)-Yes
0828001 = United Kingdom (Scotland) : A TV streaming subscription that is paid for (e.g. Netflix, A
0348001 = Hungary : Video games console e.g. Sony Play StationTM-Yes
0158001 = Chinese Taipei : Piano,violin or other expensive instrument-Yes
0188001 = Costa Rica : Cable TV (Sky, Cable Tica,Tigo, etc.)-Yes
0620002 = Portugal : Cable TV or satellite dish-No
0040002 = Austria : a laptop/notebook/a tablet of your own-No
0591002 = Panama : Cable or satellite television-No
0422002 = Lebanon : Flat screen TV / plasma / LCD-No
0152002 = Chile : A second house (for vacation or weekend)-No
0372002 = Ireland : Your own MP3 player (e.g. iPod)-No
0792002 = Turkey : Air conditioning type heating-cooling system-No
0643002 = Russian Federation : musical instruments (e.g., violin, piano, synthesizer)-No
0604002 = Peru : video games (Playstation, Nintendo, Wii, etc.)-No
0704002 = VietNam : A set of flags (chess, chess, ...)-No
0804002 = Ukraine : Family heirlooms (antiques)-No
0344002 = Hong Kong (China) : Plasma TV / LCD TV (40' or above)-No
0784002 = United Arab Emirates : A laptop of your own-No
0056002 = Belgium : A home cinema installation (LCD or LED screen with home cinema system)-No
0756002 = Switzerland : Musical intrument (without recorder/flute)-No
0276002 = Germany : One or multiple music instruments-No
0827002 = United Kingdom (Excl. Scotland) : Dishwasher-No
0208002 = Denmark : A musical instrument (e.g. piano, guitar, violin)-No
0608002 = Philippines : Means of transportation (e.g. motorcycle, tricycle, jeepney, car, etc.)-No
0828002 = United Kingdom (Scotland) : A TV streaming subscription that is paid for (e.g. Netflix, A
0348002 = Hungary : Video games console e.g. Sony Play StationTM-No
0158002 = Chinese Taipei : Piano,violin or other expensive instrument-No
0188002 = Costa Rica : Cable TV (Sky, Cable Tica,Tigo, etc.)-No

In your home: <Country-specific wealth item 2>
0410001 = Korea : screen and stereo for watching movie-Yes
0840001 = United States : A high-speed Internet connection-Yes
0250001 = France : A digital camera (apart from mobile phone)-Yes
0411001 = Kosovo : Cultural television programs, paid-Yes
0191001 = Croatia : Game console (e.g. Playstation 3 or Nintendo Wii)-Yes
0702001 = Singapore : Domestic helper (e.g. full/part-time maid)-Yes
0112001 = Belarus : A mobile and/or landline phone-Yes
0422001 = Lebanon : Cable TV / paid / satellite-Yes
0372001 = Ireland : Your own laptop or tablet (e.g. iPad, Samsung Galaxy Tab)-Yes
0792001 = Turkey : TV subscriptions with payment-Yes
0703001 = Slovak Republic : digital camera (not as a part of smartphone)-Yes
0214001 = Dominican Republic : Air conditioner-Yes
0124001 = Canada : A subscription to a daily newspaper-Yes
0724001 = Spain : Tablet (iPad, Samsung Galaxy Tab)-Yes
0554001 = New Zealand : Boat (e.g. leisure craft, yacht)-Yes
0784001 = United Arab Emirates : Electronic games (Wii, Xbox)-Yes
0705001 = Slovenia : Attending an extra out-of-school-time activities paid by your parents.-Yes
0036001 = Australia : A pool or outdoor spa bath/Jacuzzi-Yes
0276001 = Germany : smartphone (e.g., iPhone, Samsung Galaxy Smartphone)-Yes
0376001 = Israel : Membership to the theater, GYM, or swimming pool-Yes
0096001 = Brunei Darussalam : Tablet computers (e.g. iPad, Samsung Galaxy Tab)-Yes
0827001 = United Kingdom (Excl. Scotland) : Tumble dryer-Yes
0008001 = Albania : Flat screen TV, plasma or LCD-Yes
0528001 = Netherlands : A personal computer or laptop-Yes
0828001 = United Kingdom (Scotland) : A musical instrument (e.g. piano, violin)-Yes
0348001 = Hungary : Tablet computer (e.g. iPad, Samsung Galaxy Tab, Blackberry Playbook)-Yes
0158001 = Chinese Taipei : iPad or other tablet-Yes
0410002 = Korea : screen and stereo for watching movie-No
0840002 = United States : A high-speed Internet connection-No
0250002 = France : A digital camera (apart from mobile phone)-No
0411002 = Kosovo : Cultural television programs, paid-No
0191002 = Croatia : Game console (e.g. Playstation 3 or Nintendo Wii)-No
0702002 = Singapore : Domestic helper (e.g. full/part-time maid)-No
0112002 = Belarus : A mobile and/or landline phone-No
0422002 = Lebanon : Cable TV / paid / satellite-No
0372002 = Ireland : Your own laptop or tablet (e.g. iPad, Samsung Galaxy Tab)-No
0792002 = Turkey : TV subscriptions with payment-No
0703002 = Slovak Republic : digital camera (not as a part of smartphone)-No
0124002 = Canada : A subscription to a daily newspaper-No
0724002 = Spain : Tablet (iPad, Samsung Galaxy Tab)-No
0554002 = New Zealand : Boat (e.g. leisure craft, yacht)-No
0784002 = United Arab Emirates : Electronic games (Wii, Xbox)-No
0705002 = Slovenia : Attending an extra out-of-school-time activities paid by your parents.-No
0036002 = Australia : A pool or outdoor spa bath/Jacuzzi-No
0276002 = Germany : smartphone (e.g., iPhone, Samsung Galaxy Smartphone)-No
0376002 = Israel : Membership to the theater, GYM, or swimming pool-No
0096002 = Brunei Darussalam : Tablet computers (e.g. iPad, Samsung Galaxy Tab)-No
0827002 = United Kingdom (Excl. Scotland) : Tumble dryer-No
0008002 = Albania : Flat screen TV, plasma or LCD-No
0528002 = Netherlands : A personal computer or laptop-No
0828002 = United Kingdom (Scotland) : A musical instrument (e.g. piano, violin)-No
0348002 = Hungary : Tablet computer (e.g. iPad, Samsung Galaxy Tab, Blackberry Playbook)-No
0158002 = Chinese Taipei : iPad or other tablet-No

In your home: <Country-specific wealth item 3>
0040001 = Austria : a swimming pool or a swimming pond-Yes
0840001 = United States : A musical instrument-Yes
0070001 = Bosnia and Herzegovina : digital camera-Yes
0170001 = Colombia : Tablets (for example, iPad, BlackBerry, PlayBookTM)-Yes
0112001 = Belarus : A photo or video camera that can be used for school tasks-Yes
0032001 = Argentina : Cable television / Digital television-Yes
0442001 = Luxembourg : Game console (Playstation 4 Slim/4 Pro or Xbox One S/One X or Nintendo Swit
0372001 = Ireland : Your own smartphone (e.g. iPhone, Samsung Galaxy)-Yes
0792001 = Turkey : a holiday for at least one week in a year-Yes
0643001 = Russian Federation : a house or cottedge constructed during the last 15 years-Yes
0504001 = Morocco : clothes of international brands-Yes
0704001 = VietNam : A set of badminton / table tennis-Yes
0214001 = Dominican Republic : Decoration articles-Yes
0705001 = Slovenia : Travelling abroad for one week or more-Yes
0056001 = Belgium : Domestic help (cleaning help, gardener, etc.)-Yes
0376001 = Israel : Equipment for leisure activity (For example for diving, for fishing, for ski)-Ye
0827001 = United Kingdom (Excl. Scotland) : someone your parents pay to help with work at home (e.g
0008001 = Albania : Cable, digital, or satellite TV-Yes
0528001 = Netherlands : A subscription to a newspaper-Yes
0828001 = United Kingdom (Scotland) : someone your parents pay to help with work at home (e.g. clea
0348001 = Hungary : Digital camera (not part of a phone)-Yes
0858001 = Uruguay : Laptop, notebook or netbook (not from Ceibal)-Yes
0196011 = Cyprus : A home security alarm system-Yes
0040002 = Austria : a swimming pool or a swimming pond-No
0070002 = Bosnia and Herzegovina : digital camera-No
0170002 = Colombia : Tablets (for example, iPad, BlackBerry, PlayBookTM)-No
0112002 = Belarus : A photo or video camera that can be used for school tasks-No
0032002 = Argentina : Cable television / Digital television-No
0442002 = Luxembourg : Game console (Playstation 4 Slim/4 Pro or Xbox One S/One X or Nintendo Swit
0372002 = Ireland : Your own smartphone (e.g. iPhone, Samsung Galaxy)-No
0792002 = Turkey : a holiday for at least one week in a year-No
0643002 = Russian Federation : a house or cottedge constructed during the last 15 years-No
0504002 = Morocco : clothes of international brands-No
0704002 = VietNam : A set of badminton / table tennis-No
0214002 = Dominican Republic : Decoration articles-No
0705002 = Slovenia : Travelling abroad for one week or more-No
0056002 = Belgium : Domestic help (cleaning help, gardener, etc.)-No
0376002 = Israel : Equipment for leisure activity (For example for diving, for fishing, for ski)-No
0827002 = United Kingdom (Excl. Scotland) : someone your parents pay to help with work at home (e.g
0008002 = Albania : Cable, digital, or satellite TV-No
0528002 = Netherlands : A subscription to a newspaper-No
0828002 = United Kingdom (Scotland) : someone your parents pay to help with work at home (e.g. clea
0348002 = Hungary : Digital camera (not part of a phone)-No
0858002 = Uruguay : Laptop, notebook or netbook (not from Ceibal)-No
0196012 = Cyprus : A home security alarm system-No

How many in your home: Televisions
1 = None
2 = One
3 = Two
4 = Three or more
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

How many books are there in your home?
1 = 0-10 books
2 = 11-25 books
3 = 26-100 books
4 = 101-200 books
5 = 201-500 books
6 = More than 500 books
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

In what country were you and your parents born? You
1 = Country of test
2 = Other country
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

How old were you when you arrived in <country of test>?
1 = age 0 - 1
2 = age 1
3 = age 2
4 = age 3
5 = age 4
6 = age 5
7 = age 6
8 = age 7
9 = age 8
10 = age 9
11 = age 10
12 = age 11
13 = age 12
14 = age 13
15 = age 14
16 = age 15
17 = age 16
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

How old were you when you started <ISCED 0>? Years
1 = 1 year or younger
2 = 2 years
3 = 3 years
4 = 4 years
5 = 5 years
6 = 6 years or older
7 = I did not attend ISCED 0
8 = I do not remember
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

How old were you when you started <ISCED 1>? Years
1 = 3 or younger
2 = 4
3 = 5
4 = 6
5 = 7
6 = 8
7 = 9 or older
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

Have you ever repeated a <grade>? At <ISCED 1>
1 = No, never
2 = Yes, once
3 = Yes, twice or more
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

What language do you speak at home most of the time?
1 = Language of the test
2 = Other language
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

Which language do you usually speak with: My mother
1 = Mostly my heritage language
2 = About equally often my heritage language and test language
3 = Mostly test language
4 = Not applicable - e.g. because heritage language and test language are the same
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

How often during <test language lessons>: Students don't listen to what the teacher says.
1 = Every lesson
2 = Most lessons
3 = Some lessons
4 = Never or hardly ever
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

Thinking of past two <test language lessons>: The teacher made me feel confident in my ability to do well in the course.
1 = Strongly disagree
2 = Disagree
3 = Agree
4 = Strongly agree
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

How often in <test language lessons>: The teacher adapts the lesson to my class’s needs and knowledge.
1 = Never or almost never
2 = Some lessons
3 = Many lessons
4 = Every lesson or almost every lesson
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

During the last month, how often did you have to read for school: Texts that include diagrams or maps
1 = Many times
2 = Two or three times
3 = Once
4 = Not at all
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

In your <test language lessons>, how often: The teacher encourages students to express their opinion about a text.
1 = Never or hardly ever
2 = In some lessons
3 = In most lessons
4 = In all lessons
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

<this academic year>, how many pages was the longest piece of text you had to read for your <test language lessons>?
1 = One page or less
2 = Between 2 and 10 pages
3 = Between 11 and 50 pages
4 = Between 51 and 100 pages
5 = Between 101 and 500 pages
6 = More than 500 pages
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

How often do you read these materials because you want to? Magazines
1 = Never or almost never
2 = A few times a year
3 = About once a month
4 = Several times a month
5 = Several times a week
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

Which of the following statements best describes how you read books (on any topic)?
1 = I rarely or never read books.
2 = I read books more often in paper format.
3 = I read books more often on digital devices (e.g. e-reader, tablet, smartphone, computer).
4 = I read books equally often in paper format and on digital devices.
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

About how much time do you usually spend reading for enjoyment?
1 = I do not read for enjoyment
2 = 30 minutes or less a day
3 = More than 30 minutes to less than 60 minutes a day
4 = 1 to 2 hours a day
5 = More than 2 hours a day
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

How often involved in: Reading emails
1 = I don't know what it is
2 = Never or almost never
3 = Several times a month
4 = Several times a week
5 = Several times a day
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

Usefulness for understanding and memorising text: I concentrate on the parts of the text that are easy to understand.
1 = Not useful at all(1)
2 = (2)
3 = (3)
4 = (4)
5 = (5)
6 = Very useful(6)
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

How appropriate in reaction to this email: Answer the email and ask for more information about the smartphone
1 = Not appropriate at all(1)
2 = (2)
3 = (3)
4 = (4)
5 = (5)
6 = Very appropriate(6)
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

Overall, how satisfied are you with your life as a whole these days?
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

Thinking about your school: Trying hard at school will help me get a good job.
1 = Strongly agree
2 = Agree
3 = Disagree
4 = Strongly disagree
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

Do you expect to complete? <ISCED level 2>
0 = Not checked
1 = Checked

Thinking about yourself and how you normally feel: how often do you feel as described below? Happy
1 = Never
2 = Rarely
3 = Sometimes
4 = Always
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

How true for you: My goal is to learn as much as possible.
1 = Not at all true of me
2 = Slightly true of me
3 = Moderately true of me
4 = Very true of me
5 = Extremely true of me
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

How easy to perform on your own: Explain how carbon-dioxide emissions affect global climate change
1 = I couldn't do this
2 = I would struggle to do this on my own
3 = I could do this with a bit of effort
4 = I could do this easily
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

How informed are you about the following topics? Climate change and global warming
1 = I have never heard of this
2 = I have heard about this but I would not be able to explain what it is really about
3 = I know something about this and could explain the general issue
4 = I am familiar with this and I would be able to explain this well
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

How well does the following describe you: I try to look at everybody's side of a disagreement before I make a decision.
1 = Very much like me
2 = Mostly like me
3 = Somewhat like me
4 = Not much like me
5 = Not at all like me
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

How many languages [...] do you and your parents speak well enough to converse with others? You
1 = One
2 = Two
3 = Three
4 = Four or more
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

How many foreign languages do you learn at your school this school year?
99995 = Valid Skip
99997 = Not Applicable
99998 = Invalid
99999 = No Response

Teachers in your school: They have misconceptions about the history of some cultural groups.
1 = To none or almost none of them
2 = To some of them
3 = To most of them
4 = To all or almost all of them
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

Think about your school, how true: Students seem to value competition.
1 = Not at all true
2 = Slightly true
3 = Very true
4 = Extremely true
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

Typically required to attend: Number of <class periods> per week in <test language lessons>
995 = Valid Skip
997 = Not Applicable
998 = Invalid
999 = No Response

In the last two full weeks of school, how often: I <skipped> a whole school day.
1 = Never
2 = One or two times
3 = Three or four times
4 = Five or more times
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

During the past 12 months, how often: Other students left me out of things on purpose.
1 = Never or almost never
2 = A few times a year
3 = A few times a month
4 = Once a week or more
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

Available for you to use at home: Desktop computer
1 = Yes, and I use it
2 = Yes, but I don’t use it
3 = No
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

Available for you to use at home: Internet connection
1 = Yes, and I use it
2 = No
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

How old were you when you first used a digital device?
1 = 3 years old or younger
2 = 4-6 years old
3 = 7-9 years old
4 = 10-12 years old
5 = 13 years old or older
6 = I have never used a digital device until today
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

How old were you when you first accessed the Internet?
1 = 3 years old or younger
2 = 4-6 years old
3 = 7-9 years old
4 = 10-12 years old
5 = 13 years old or older
6 = I have never accessed the Internet
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

During a typical weekday, for how long do you use the Internet at school?
1 = No time
2 = 1-30 minutes per day
3 = 31-60 minutes per day
4 = Between 1 hour and 2 hours per day
5 = Between 2 hours and 4 hours per day
6 = Between 4 hours and 6 hours per day
7 = More than 6 hours per day
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

Time spent using digital devices during classroom lessons in a typical school week: <Test language lessons>
1 = No time
2 = 1 - 30 minutes a week
3 = 31 - 60 minutes a week
4 = More than 60 minutes a week
5 = I do not study this subject
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

Digital device used for learning or teaching during lessons within the last month: <Test language lessons>
1 = Yes, both the teacher and students used it
2 = Yes, but only students used it
3 = Yes, but only the teacher used it
4 = No
5 = I do not study this subject
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

Use digital devices outside of school: Playing one-player games.
1 = Never or hardly ever
2 = Once or twice a month
3 = Once or twice a week
4 = Almost every day
5 = Every day
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

Which of the following statements best describes how you read the news (e.g. politics, culture, sport, local news)?
1 = I do not follow the news at all.
2 = I only watch or listen to the news (e.g. radio, television, podcasts).
3 = I read the news more often on digital devices (e.g. tablet, smartphone, computer).
4 = I read the news more often on paper (e.g. newspapers, magazines).
5 = I read the news equally often in paper format and on digital devices.
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

Kód studijního programu
05910010 = Panama: Upper Secondary Education, pre-vocational-type program (other baccalaureate dipl
00320010 = Argentina: Adults Primary Programme (3th and 4th year)
02030010 = Czech Republic: Secondary special school, vocational education predominantly
08040010 = Ukraine: Vocational - technical educational institution
00560010 = Belgium: Special secondary education - lower secondary (training form 3 / first 3 years)
02760010 = Germany: Lower secondary comprehensive, access to upper secondary; academic education
00960010 = Brunei Darussalam: Senior School Upper Years (Year 10 to Year 11)
08270010 = United Kingdom (excl.Scotland): Students studying mostly for AS or A Levels in Northern
05280010 = Netherlands: Mixed 1-2, no tracking, preparing for VMBO or HAVO or VWO, determined at th
03480010 = Hungary: Grammar school 3 (8 years long, grade 7-8)
08580010 = Uruguay: Vocational upper secondary with a professional component.
05910020 = Panama: Upper Secondary Education, pre-vocational-type program (other baccalaureate dipl
00560020 = Belgium: Special secondary education (training form 3) (Fr Com /Ger)
00960020 = Brunei Darussalam: Lower and Upper Secondary (Year 7 to 11)
06200001 = Portugal: Basic Schooling - Regular Curriculum - 3rd cycle
00700001 = Bosnia and Herzegovina: lower secondary education
03800001 = Italy: Artistic, Classical, Linguistic, Music and performing arts, Scientific, Social st
00310001 = Baku (Azerbaijan) : Lower secondary education
05910001 = Panama: Lower Secondary Education (regular modality) // regular subsystem of education
01120001 = Belarus: Educational program of basic education (secondary lower)
04420001 = Luxembourg: Preparatory courses within modular classes of the Preparatory Regime (lower
06420001 = Romania: General education, leading to the continuation of studies (lower secondary educ
06430001 = Russian Federation: Programme of basic general education (Lower secondary)
05040001 = Morocco: Lower secondary school (preparatory)
06040001 = Peru: Lower secondary education.Includes regular, alternately and distance program.
08040001 = Ukraine: Secondary school / secondary boarding school / sanatorium school / school of so
02140001 = Dominican Republic: First cycle of Secondary Education
01240001 = Canada: Grades 7 - 9 (Quebec: Secondary 1 – 3 )
03440001 = Hong Kong (China): Lower Secondary in G & I Sch.
07840001 = United Arab Emirates: Secondary education (lower)
07050001 = Slovenia: Secondary general education - general and cassical gymnasiums
00360001 = Australia: Lower secondary general academic
04460001 = Macao (China): Grammar or International Program at Lower Secondary Levels
00560001 = Belgium: (First year A of first stage of) secondary Education
01560001 = B-S-J-Z (China): Secondary education (lower)
07560001 = Switzerland: Secondary education, First stage
02760001 = Germany: Lower secondary, some with access to upper secondary (special education)
03760001 = Israel: Primary + Lower secondary education, grades 1-8
00960001 = Brunei Darussalam: Lower Secondary Education
08070001 = North Macedonia: Primary Education - eight years
08270001 = United Kingdom (excl.Scotland): Students studying mostly toward GCSEs in England and Wal
02080001 = Denmark: Primary and lower secondary (public school, private school)
05280001 = Netherlands: practical preparation for labour market
08280001 = United Kingdom (Scotland): Senior Phase and studying mainly towards qualifications at SC
03980001 = Kazakhstan: Programm of basic secondary education (5-9 grades);
04980001 = Republic of Moldova: Secondary Education (lower), cycle I
04990001 = Montenegro: general upper secondary school
01960101 = Cyprus: General Secondary Education - Gymnasium - Lower
05910011 = Panama: Upper Secondary Education, pre-vocational-type program (other baccalaureate dipl
00320011 = Argentina: Adults Lower Secondary Programme (1st, 2nd and 3rd year)
00560011 = Belgium: Special secondary education - upper secondary (training form 3 / years 4 and 5)
02760011 = Germany: Upper secondary comprehensive (after lower secondary with different tracks taug
00960011 = Brunei Darussalam: Senior School Upper Years (Year 12 to Year 13)
08270011 = United Kingdom (excl.Scotland): Studying towards int'l qualifications, eg. Int'l or Euro
03480011 = Hungary: Grammar school 3 (8 years long, grade 9-12)
08580011 = Uruguay: Vocational upper secondary (Proficiency baccalaureate)
00560021 = Belgium: First, second & third degrees of Special secondary education ( form 4) (Fr Com
02760021 = Germany: Upper secondary (vocational), qualifying for subject-specific tertiary educatio
01000002 = Bulgaria: Secondary education - general non-profiled (upper)
06200002 = Portugal: Basic Schooling - Specialized Arts Curriculum - 3rd cycle
00700002 = Bosnia and Herzegovina: general upper secondary school
01700002 = Colombia: Secondary education (upper), academic
00310002 = Baku (Azerbaijan) : Upper secondary education
01910002 = Croatia: Four year or five year vocational programmes
05910002 = Panama: Lower Secondary Education (multigrade modality) // regular subsystem of educatio
01120002 = Belarus: Educational program of secondary education (upper)
04220002 = Lebanon: Secondary Professional education( lower), B.P.1=8 and B.P.2=9)
00320002 = Argentina: General Programme - Lower Secondary (1st, 2nd and 3rd year)
04420002 = Luxembourg: Lower technical secondary education
06420002 = Romania: High School (upper secondary education)
01520002 = Chile: First cycle of upper Secondary general education
03520002 = Iceland: Stúdentspróf. Matriculation examination certificate (granting access to unive
07520002 = Sweden: Upper secondary school, general orientation
06820002 = Saudi Arabia: secondary education with direct access to tertiary education
03920002 = Japan: College of Technology (First 3 years)
02030002 = Czech Republic: 6, 8-year gymnasium and 8-year conservatory (lower secondary)
07030002 = Slovak Republic: Vocational Basic school
06430002 = Russian Federation: Programme of secondary general education (Upper secondary)
05040002 = Morocco: Upper secondary school (Qualifying)-Original Education
06040002 = Peru: Upper secondary education.Includes regular, alternately and distance program.
08040002 = Ukraine: School/ boarding school with extensive learning of some subjects (specialized
02140002 = Dominican Republic: Second cycle of Secondary Education
01240002 = Canada: Grades 10 - 12 (Quebec: Secondary 4 and 5, Newfoundland and Labrador: Level I -
03440002 = Hong Kong (China): Upper Secondary in G & I Sch.
07840002 = United Arab Emirates: Secondary Education (upper)
07050002 = Slovenia: Secondary general education - technical gymnasiums
00360002 = Australia: Lower secondary with some VET subjects
02460002 = Finland: Comprehensive secondary school, additional education
04460002 = Macao (China): Grammar or International Program at Higher Secondary Levels
00560002 = Belgium: (First year B of first stage of secondary Education) – Remedial/Prevocationa
01560002 = B-S-J-Z (China): Secondary education (upper)
07560002 = Switzerland: Preparatory course for vocational education
02760002 = Germany: Lower secondary, some with access to upper secondary; basic general education
03760002 = Israel: Primary + Lower secondary education, grades 1-9
00960002 = Brunei Darussalam: Upper Secondary General 4 Years
08070002 = North Macedonia: Primary Education - nine years
08270002 = United Kingdom (excl.Scotland): Students studying mostly for AS or A Levels in England a
05280002 = Netherlands: general vocational oriented; in next year tracks into BB, KB, GL, TL
08280002 = United Kingdom (Scotland): Senior Phase and studying mainly towards qualifications at SC
03480002 = Hungary: Language Preparatory 7th grade(7Ny grade)
01580002 = Chinese Taipei: regular senior secondary schools
08580002 = Uruguay: Lower Secondary with a technological component
05780002 = Norway: Academic programme, Upper secondary
01880002 = Costa Rica: Secondary education (upper) academic
03980002 = Kazakhstan: Program of general secondary education (10-11 grades of general secondary sc
04980002 = Republic of Moldova: Secondary Education (upper), cycle II
04990002 = Montenegro: lower secondary or 3rd cycle of compulsory basic education
01960102 = Cyprus: General Secondary Education - Gymnasium - Upper
05910012 = Panama: Lower Secondary Education // no-regular subsystem of education for Youth and Adu
00320012 = Argentina: Adults Upper Secondary Programme (4th, 5th and 6th year)
00560012 = Belgium: 1st or 2d year of general education (=First degree of general education (Fr/Ger
02760012 = Germany: Lower secondary, expectedly no access to upper; basic general education
00960012 = Brunei Darussalam: Lower Secondary Tahfiz Al-Quran
08270012 = United Kingdom (excl.Scotland): Students studying mostly towards level 1 vocational qual
03480012 = Hungary: Grammar school 3 after Language Preparatory (8 years long, grade 7-8)
08580012 = Uruguay: Technical upper secondary (Beauty or Textil and Clothing)
01000003 = Bulgaria: Secondary education - general profiled (upper)
03000003 = Greece: Technical-Vocational Schools Upper secondary education
04100003 = Korea: Upper Secondary Vocational Education
06200003 = Portugal: Basic Schooling - pre-vocational, 3rd cycle
00400003 = Austria: vocational school for apprentices
00700003 = Bosnia and Herzegovina: 3-year vocational secondary school
01700003 = Colombia: Secondary education (upper), technic
04700003 = Malta: General Upper-secondary, post-compulsory level
03800003 = Italy: Vocational Institute, Art Institute (Industry and Craft Workers)
00310003 = Baku (Azerbaijan) : Post-secondary non-tertiary education
05910003 = Panama: Lower Secondary Education (tele-education modality) // regular subsystem of educ
01120003 = Belarus: Educational program of technical and vocational education
00320003 = Argentina: General Programme - Upper Secondary (4th, 5th and 6th year)
04420003 = Luxembourg: Lower general secondary education
06420003 = Romania: Vocational programmes with a duration of three years (leading to qualification
01520003 = Chile: Second cycle of upper secondary education, academic orientation
07520003 = Sweden: Upper secondary school, vocational orientation
06820003 = Saudi Arabia: technical education with direct access to tertiary education
03920003 = Japan: Upper secondary school (Vocational)
07920003 = Turkey: Vocational and Technical Secondary Education
02030003 = Czech Republic: 6, 8-year gymnasium (upper secondary)
07030003 = Slovak Republic: Secondary school (ISCED 2)
02330003 = Estonia: Vocational upper secondary education
06430003 = Russian Federation: Programme of secondary professional education (technikum, colledge,
05040003 = Morocco: Upper secondary school (Qualifying)-Arts and humanities
06040003 = Peru: Alternative Basic Education-Advanced cycle. Includes Adults secondary program.
02140003 = Dominican Republic: Secondary education Professional Modality
07640003 = Thailand: Vocational Certificate level (Cert. of VOC.)
04840003 = Mexico: General Lower Secondary by Television
07840003 = United Arab Emirates: Secondary education (technical -lower)
00360003 = Australia: Upper secondary general academic
04460003 = Macao (China): Technical or Prevocational Program at Higher Secondary Levels
00560003 = Belgium: Second year of first stage - preparing for vocational upper secundary education
01560003 = B-S-J-Z (China): Vocational Junior Secondary Schools
07560003 = Switzerland: School preparing for the university entrance certificate
00760003 = Brazil: Vocational upper secondary education- 3 years long
02760003 = Germany: Lower secondary, access to upper secondary; extensive general education
03760003 = Israel: Lower secondary education, grades 7-9
00960003 = Brunei Darussalam: Upper Secondary General 5 Years
08070003 = North Macedonia: Secondary Education - Gymnasium/General
08270003 = United Kingdom (excl.Scotland): Studying towards int'l qualifications, eg. Int'l or Euro
00080003 = Albania: Secondary education, vocational variant
02080003 = Denmark: Education at a production school
05280003 = Netherlands: Admission to ISCED 3 = MBO level 1-3, post secondary, non tertiary
08280003 = United Kingdom (Scotland): Senior Phase & studying towards Nat'l Progression Award or Na
03480003 = Hungary: Language Preparatory 9th grade (9Ny grade)
01580003 = Chinese Taipei: skill-based senior secondary schools
08580003 = Uruguay: Lower Secondary with a technological component in rural schools
02680003 = Georgia: vocational institution 1-3 levels
05780003 = Norway: Vovactional programme, Upper secondary
01880003 = Costa Rica: Secondary education (upper) technical
03980003 = Kazakhstan: Programme of technical and vocational education (specialized school, college
04980003 = Republic of Moldova: Profesional Technical Secondary Education
04990003 = Montenegro: 3-year vocational secondary school
01960103 = Cyprus: General Secondary Education - Lyceum
05910013 = Panama: Lower Secondary Education // no-regular subsystem of education for Youth and Adu
00320013 = Argentina: Adults Lower Secondary Programme (1st and 2nd year)
00560013 = Belgium: 1st or 2d year of remedial education
02760013 = Germany: Lower secondary, expectedly access to upper; extensive general education
00960013 = Brunei Darussalam: Upper Secondary Tahfiz Al-Quran 5 Years Arabic
08270013 = United Kingdom (excl.Scotland): Students studying mostly towards level 2 vocational qual
03480013 = Hungary: Grammar school 3 after Language Preparatory (8 years long, grade 9-12)
01000004 = Bulgaria: Secondary education - vocational (upper)
06200004 = Portugal: Secondary Education - Scientific-Humanistic studies
00400004 = Austria: intermediate technical and vocational school
00700004 = Bosnia and Herzegovina: 4-year vocational secondary school
00310004 = Baku (Azerbaijan) : Short-cycle tertiary education
01910004 = Croatia: Vocational programmes for industry
05910004 = Panama: Upper Secondary Education, academic-oriented program (regular track, grades 10-
01120004 = Belarus: Educational program of secondary special education (professional training)
04220004 = Lebanon: Secondary Technical Education (upper), BT1= 10 and BT2=11 and BT3=12
00320004 = Argentina: Vocational Programme - Lower Secondary (1st, 2nd and 3rd year)
04420004 = Luxembourg: Vocational regime: a 3-year vocational education
01520004 = Chile: Second cycle of upper Secondary education, technical orientation
07520004 = Sweden: Upper secondary school, introduction programmes, vocational orientation
03920004 = Japan: Secondary school (Upper division)
07030004 = Slovak Republic: Secondary school (ISCED 3)
05040004 = Morocco: Upper secondary school (Qualifying)-Science
06040004 = Peru: Technical Productive Education-Middle cycle
08040004 = Ukraine: Secondary school with extensive learning of philosophy, languages or culture an
02140004 = Dominican Republic: Secondary education Arts Modality
07240004 = Spain: Intermediate Level Vocational Training
04840004 = Mexico: General Baccalaureate or Upper Secondary: annual plan
07840004 = United Arab Emirates: Secondary education (technical -upper)
07050004 = Slovenia: Vocational education programmes of medium duration - school type and dual type
00360004 = Australia: Upper secondary with some VET subjects
02460004 = Finland: Upper secodary vocational school
00560004 = Belgium: Second year of first stage - Preparing for all streams in mainstream upper seco
01560004 = B-S-J-Z (China): Secondary Vocational Schools, 5-years vocational schools
07560004 = Switzerland: Vocational baccalaureat, dual system 3-4 years
00760004 = Brazil: Vocational upper secondary education- 4 years long
02760004 = Germany: Lower secondary, access to upper secondary; academic education (exclusively stu
03760004 = Israel: Upper secondary education, grades 10-12
00960004 = Brunei Darussalam: Upper Secondary Applied
08070004 = North Macedonia: Secondary Education - Vocational - four years
08270004 = United Kingdom (excl.Scotland): Students studying mostly towards level 1 vocational qual
02080004 = Denmark: Upper secondary education (general, commercial, technical)
05280004 = Netherlands: admission to ISCED 3 = MBO level 1-3
08280004 = United Kingdom (Scotland): Senior Phase and studying towards Nat'l Progression Award or
03480004 = Hungary: Grammar school 1 (4 years long)
01580004 = Chinese Taipei: comprehensive senior secondary schools (general courses)
08580004 = Uruguay: Lower secondary in Rural Primary Schools
02680004 = Georgia: vocational institution 4-5 levels
04980004 = Republic of Moldova: Post-Secondary Profesional Technical Education (lower)
04990004 = Montenegro: 4-year vocational secondary school
05910014 = Panama: Lower Secondary Education // no-regular subsystem of education for Youth and Adu
00320014 = Argentina: Adults Upper Secondary Programme (3th, 4th and 5th year)
00560014 = Belgium: 1 year to help students who after 3 years in Isced 2 did not reach the required
02760014 = Germany: Lower secondary, no access to upper; basic general education (students of diffe
00960014 = Brunei Darussalam: Upper Secondary Tahfiz Al-Quran 5 Years Science
08270014 = United Kingdom (excl.Scotland): Students studying mostly towards level 3 vocational qual
06200005 = Portugal: Secondary Education - Professional
00400005 = Austria: higher technical and vocational college
04700005 = Malta: Vocational Upper-secondary, post-compulsory level - Level 1
03800005 = Italy: Vocational training; Vocational Schools of Bolzano and Trento Provinces
01910005 = Croatia: Vocational programmes for crafts
05910005 = Panama: Upper Secondary Education, academic-oriented program (special track, grades 10-
04220005 = Lebanon: Secondary Professional education( upper), LP1=10, LP2=11, LP3=12
00320005 = Argentina: Vocational programme - Upper Secondary (4th, 5th, 6th and 7th year)
04420005 = Luxembourg: Technician's regime: a 4-year technical education
07520005 = Sweden: Upper secondary school, introduction programmes
02030005 = Czech Republic: Voc/tech secondary school with maturate
05040005 = Morocco: Upper secondary school (Qualifying)-Technology
02140005 = Dominican Republic: Basic Adult Education
04840005 = Mexico: General Baccalaureate or Upper Secondary: semester plan
07050005 = Slovenia: Vocational education programmes of short duration
02460005 = Finland: Double or triple examination, upper secondary school
00560005 = Belgium: Second & third stage general secondary education
07560005 = Switzerland: Vocational education, dual system 3-4 years
02760005 = Germany: Upper secondary (exclusively students of the same track [cf. key 4])
03760005 = Israel: 4 years Higher education, grades 9-12
00960005 = Brunei Darussalam: Upper Secondary Special Applied
08070005 = North Macedonia: Secondary Education - Artistic
08270005 = United Kingdom (excl.Scotland): Students studying mostly towards level 2 vocational qual
00080005 = Albania: Secondary education for adults(upper)
05280005 = Netherlands: admission to ISCED 3 = MBO tertiary level, preparing for upper secondary HA
08280005 = United Kingdom (Scotland): Broad general education and studying directly for some qualif
03480005 = Hungary: Grammar school 1 after Language Preparatory (4 years long)
01580005 = Chinese Taipei: comprehensive senior secondary schools (regular courses)
08580005 = Uruguay: Lower Secondary with a very important technological component
04980005 = Republic of Moldova: Post-Secondary Profesional Technical Education (upper)
05910015 = Panama: Upper Secondary Education, academic-oriented program // no-regular subsystem o
00320015 = Argentina: Pre-vocational programme for Adults
00560015 = Belgium: 3d, 4th, 5th, 6th year of general education (=Second & third degrees of general
02760015 = Germany: Lower secondary, access to upper; extensive general education (students of diff
00960015 = Brunei Darussalam: Lower Secondary Arabic Education
08270015 = United Kingdom (excl.Scotland): Studying mostly toward Entry Level certificates and qual
03480015 = Hungary: Vocational secondary school after Language Preparatory
06200006 = Portugal: Secondary Education - Specialized Arts Curriculum
04700006 = Malta: Vocational Upper-secondary, post-compulsory level - Levels 2 and 3
01910006 = Croatia: Lower qualification vocational programmes
05910006 = Panama: Upper Secondary Education, normal school variant // regular subsystem of educat
00320006 = Argentina: General Programme - Lower Secondary (1st and 2nd year)
04420006 = Luxembourg: Technical regime: a 4 to 5-year technical, commercial or social education
02030006 = Czech Republic: Conservatory (upper secondary)
07030006 = Slovak Republic: Secondary College - branch/class with a school leaving examination
05040006 = Morocco: Upper secondary school (Qualifying)-Vocational Baccalaureate
02140006 = Dominican Republic: Secondary Adult Education: first grade
04840006 = Mexico: General Baccalaureate or Upper Secondary: 2 years plan
00560006 = Belgium: Second & third stage technical secondary education
02760006 = Germany: Lower secondary comprehensive, achievement-based access to upper secondary (wit
03760006 = Israel: 6 years Higher education, grades 7-9
00960006 = Brunei Darussalam: Lower Secondary Specialised
08070006 = North Macedonia: Secondary education - Technical - two years
08270006 = United Kingdom (excl.Scotland): Students studying mostly towards level 3 vocational qual
04280006 = Latvia: General secondary education minority
05280006 = Netherlands: Lower secondary grades of HAVO, preparing for upper secondary HAVO or MBO
08280006 = United Kingdom (Scotland): Broad general ed./not studying directly for any of these qual
03480006 = Hungary: Grammar school 2 (6 years long, grade 7-8)
01580006 = Chinese Taipei: comprehensive senior secondary schools (skill-based courses)
05910016 = Panama: Upper Secondary Education, academic-oriented program (tele-education modality)
00560016 = Belgium: 3d, 4th, 5th, 6th year of technical or artistical education (transition)
02760016 = Germany: Lower secondary with access to upper (Waldorf school)
00960016 = Brunei Darussalam: Upper Secondary Arabic Education 4 Years Science
08270016 = United Kingdom (excl.Scotland): Students below Year 11 in Northern Ireland
06200007 = Portugal: Secondary Education - Vocational
01910007 = Croatia: Primary school - lower secondary education
05910007 = Panama: Upper Secondary Education, vocational-type program (vocational diploma, middle-l
00320007 = Argentina: General Programme - Upper Secondary (3th, 4th and 5th year)
04420007 = Luxembourg: Upper general secondary education
02030007 = Czech Republic: Voc/tech secondary school without maturate
07030007 = Slovak Republic: Secondary College - branch/class without a school leaving examination
05040007 = Morocco: Students join vocational training center after grade 6 for only 1 year
08040007 = Ukraine: Secondary boarding school with extensive learning of some subjects (middle scho
02140007 = Dominican Republic: Secondary Adult Education: second to forth grade
04840007 = Mexico: Technical Baccalaureate or Technical from Upper Secondary
00560007 = Belgium: Second & third stage artistic secondary education
07560007 = Switzerland: Basic vocational education (2 years)
03760007 = Israel: 6 years Higher education, grades 10-12
00960007 = Brunei Darussalam: Upper Secondary Specialised
08070007 = North Macedonia: Secondary education - Technical - three years
08270007 = United Kingdom (excl.Scotland): Studying mostly toward Entry Level certificates and qual
05280007 = Netherlands: Upper secondary grades of HAVO, preparing for HBO (higher vocational educat
08280007 = United Kingdom (Scotland): Broad general ed./not studying directly for any of these qual
03480007 = Hungary: Grammar school 2 (6 years long, grade 9-12)
01580007 = Chinese Taipei: Five-year junior colleges (not including the last two years)
05910017 = Panama: Upper Secondary Education, comprehensive program (tecno-edúcame modality)
00560017 = Belgium: 3d, 4th, 5th, 6th year of technical or artistical education (qualification)
02760017 = Germany: Upper secondary (Waldorf school [cf. key 16])
00960017 = Brunei Darussalam: Upper Secondary Arabic Education 5 Years Science
05910008 = Panama: Upper Secondary Education, vocational-type program (industrial trades diploma)
00320008 = Argentina: Vocational Programme - Lower Secondary (1st and 2nd year)
04420008 = Luxembourg: Lower secondary (private and/or international) schools which do not follow t
02030008 = Czech Republic: Basic special/practical school
05040008 = Morocco: Students join Vocational qualification training for 1 year after grade 9
08040008 = Ukraine: College (Higher educational institution I - II degree)
00560008 = Belgium: Second & third stage vocational secondary education
02760008 = Germany: Lower secondary comprehensive, no access to upper; basic general education (dif
00960008 = Brunei Darussalam: Post Secondary Education
08070008 = North Macedonia: Secondary education - Technical - five years
08270008 = United Kingdom (excl.Scotland): Students below Year 10 in England and Wales
05280008 = Netherlands: Lower secondary grades of VWO, preparing for upper secondary VWO
03480008 = Hungary: Grammar school 2 after Language Preparatory (6 years long, grade 7-8)
05910018 = Panama: Upper Secondary Education, pre-vocational-type program (industrial trades bacca
00560018 = Belgium: 3d, 4th, 5th, 6th year of vocational education (= Second & third degrees of voc
02760018 = Germany: Pre-vocational training year upper secondary level
00960018 = Brunei Darussalam: Upper Secondary Arabic Education 5 Years Arabic
05910009 = Panama: Upper Secondary Education, pre-vocational-type program (industrial trades bacca
00320009 = Argentina: Vocational programme - Upper Secondary (3th, 4th , 5th and 6th year)
04420009 = Luxembourg: Middle & upper secondary (private and/or int'l) schools which don't follow t
08040009 = Ukraine: Technical School (Higher educational institution I - II degree)
00560009 = Belgium: Part-time vocational secondary education focused on the labour market
02760009 = Germany: Lower secondary comprehensive, access to upper; extensive general education
00960009 = Brunei Darussalam: Senior School Middle Years (Year 7 to Year 9)
08270009 = United Kingdom (excl.Scotland): Students studying mostly toward GCSEs in Northern Irelan
05280009 = Netherlands: Upper secondary grades of VWO, preparing for university
03480009 = Hungary: Grammar school 2 after Language Preparatory (6 years long, grade 9-12)
08580009 = Uruguay: Technical upper secondary (Artistic Baccalaureate)
05910019 = Panama: Upper Secondary Education, pre-vocational-type program (other baccalaureate dipl
00560019 = Belgium: Vocational training focused on the labour market (Fr /Ger)
02760019 = Germany: Vocational school upper secondary level
00960019 = Brunei Darussalam: Post Secondary Arabic Education

ISCED úroveň vzdělání
1 = ISCED level 1
2 = ISCED level 2
3 = ISCED level 3
4 = ISCED level 4
5 = ISCED level 5
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

ISCED označení
1 = A
2 = B
3 = C
4 = M
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

ISCED zaměření
1 = General
2 = Pre-Vocational
3 = Vocational
4 = Modular
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

Mother’s Education (ISCED)
0 = None
1 = ISCED 1
2 = ISCED 2
3 = ISCED 3B, C
4 = ISCED 3A, ISCED 4
5 = ISCED 5B
6 = ISCED 5A, 6
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

Language spoken with their mother for students who do not speak the test language at home
1 = Mostly their heritage language
2 = About equally often their heritage language and test language
3 = Mostly test language
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

Index Immigration status
1 = Native
2 = Second-Generation
3 = First-Generation
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

Duration in early childhood education and care
0 = Attended ECEC for less than a year
1 = Attended ECEC for at least one but less than two years
2 = Attended ECEC for at least two but less than three years
3 = Attended ECEC for at least three but less than four years
4 = Attended ECEC for at least four but less than five years
5 = Attended ECEC for at least five but less than six years
6 = Attended ECEC for at least six but less than seven years
7 = Attended ECEC for at least seven but less than eight years
8 = Attended ECEC for at least eight years
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

Grade Repetition
0 = Did not repeat a grade
1 = Repeated a grade
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

Learning time (minutes per week) - <Mathematics>
99999995 = Valid Skip
99999997 = Not Applicable
99999998 = Invalid
99999999 = No Response

Number of school changes
0 = no change
1 = one change
2 = two or more changes
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

What grade are you in? Grade
1 = 7th grade/sekunda 8-year G
2 = 8th grade/tercie 8-year G/prima 6-year G
3 = 9th grade/kvarta 8-year G/sekunda 6-year G
4 = 1st grade of upper secondary/kvinta 8-year G/tercie 6-year G
5 = Valid Skip
7 = Not Applicable
8 = Invalid
9 = No Response

Student coded grade level (from ST001Q01TA)
7 = 7th grade/sekunda 8-year G
8 = 8th grade/tercie 8-year G/prima 6-year G
9 = 9th grade/kvarta 8-year G/sekunda 6-year G
10 = 1st grade of upper secondary/kvinta 8-year G/tercie 6-year G
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

Which one of the following programmes are you in?
1 = základní škola
2 = nižší ročníky víceletého gymnázia (sekunda/kvarta) a osmiletá konzervatoř
3 = vyšší ročníky víceletého gymnázia (tercie/kvinta)
4 = čtyřleté gymnázium
5 = maturitní studium na střední odborné škole nebo odborném učilišti
6 = vyšší ročníky konzervatoře
7 = nematuritní studium na střední odborné škole nebo odborném učilišti
8 = základní škola speciální
9 = střední škola speciální - praktická škola, učiliště
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

Student coded school program (from ST002Q01TA)
1 = základní škola
2 = nižší (sekunda/kvarta)/vyšší (tercie/kvinta) ročníky víceletého gymnázia a osmiletá konzervatoř
3 = čtyřleté gymnázium
4 = maturitní studium na střední odborné škole nebo odborném učilišti
5 = vyšší ročníky konzervatoře
6 = nematuritní studium na střední odborné škole nebo odborném učilišti
7 = základní škola speciální
8 = střední škola speciální - praktická škola, učiliště
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

On what date were you born? Year
2001 = 2001
2002 = 2002
2003 = 2003
2004 = 2004
9995 = Valid Skip
9997 = Not Applicable
9998 = Invalid
9999 = No Response

In what country were you and your parents born? You
1 = Czech Republic
2 = Slovak Republic
3 = Russia
4 = Ukraine
5 = Vietnam
6 = China
7 = Other country
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

What language do you speak at home most of the time?
1 = Czech language
2 = Slovak language
3 = Romany
4 = Russian
5 = Ukrainian
6 = Vietnamese
7 = Chinese
8 = Other language
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

What was your grade of these subjects at the end of the first semester? Mathematics
1 = 1
2 = 2
3 = 3
4 = 4
5 = 5
6 = I don´t study this subject
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

What is the size of the city you live in?
1 = It has less than 1 000 inhabitants
2 = It has between 1 000 and 5 000 inhabitants
3 = It has between 5 000 and 25 000 inhabitants
4 = It has between 25 000 and 9 0000 inhabitants
5 = It has between 90 000 and 100 000 inhabitants
6 = Prague
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

How many siblings do you have? Younger than you:
1 = 0
2 = 1
3 = 2
4 = 3
5 = 4
6 = 5 or more
95 = Valid Skip
97 = Not Applicable
98 = Invalid
99 = No Response

1 = Cesi a Slovaci
2 = Ostatni narodnosti