„In smaller classes, teachers might be able to allocate more time and dedicated support to each student, whereas in larger classes some students may become disengaged due to their learning needs not receiving sufficient attention. Findings from PISA 2015 show that students in schools with smaller class sizes were ‚more likely to report that their teachers adapt their lessons to students’ needs and knowledge, provide individual help to struggling students, and change the structure of the lesson if students find it difficult to follow‘.“
OECD (Hrsg.), Equity and Inclusion in Education – Finding Strength through Diversity (2023), S. 244.