This study investigates the suitability of student-driven internationalisation of the curriculum in a diverse educational setting. Despite its vast educational potential, internationalisation of the curriculum is an often-missing component of general internationalisation even in programmes and courses with a diverse student body. To remedy this shortcoming in a course of international politics, I introduced a teaching and learning innovation, which encouraged students to use examples based on personal experiences and regional background—rather than merely from the assigned literature—during their arguments in preparation for and during biweekly seminars. In addition, the assessment criteria were shifted to support the sharing of information and knowledge among peers in this course, called “Theories of Cooperation and Conflict in International Relations”. The study uses a quasi-experimental setup and offers a comprehensive mixed-methods analysis of the innovation and finds that student learning and their classroom experience was positively impacted. While students did use notably more “own experience” examples and improved in their written preparatory work for the seminars, they turned to these very cautiously in the actual classroom debates. The findings are explained by the interplay between internationalisation and decolonisation of the classroom and the increased stakes in assessment criteria.