„Homework can have a positive influence on student achievement and also on the development of attitudes towards achievement, such as motivation and self-regulation. […] PISA findings also suggest that homework can help students succeed academically. Students who spend more time doing homework tended to score higher in mathematics, even after accounting for their social and demographic background.“
OECD (Hrsg.), PISA 2018 Results. Effective Policies, Successful Schools (2020), S. 142.