„Boys seem to be more disturbed than girls by classroom disciplinary problems and school organisational issues. As the level of disciplinary issues perceived by the average school teacher increases, the difference in PISA reading scores between girls and boys within schools tends to increase further in favour of girls. […] Boys might be more affected by deteriorated learning conditions, as they tend to be exposed to greater peer pressure than girls. They may also more likely be the students disturbing lessons.“
OECD, Positive, High‑achieving Students (2021), S. 26.