„Data from PISA show that bullying is widespread across OECD countries. In the 2018 PISA cycle, on average 23 % of students report being bullied at least a few times a month while 8 % reported being frequently bullied across OECD countries. Both bullying and being bullied have been associated with poorer academic performance and lower well-being. For instance, students who reported being bullied at least a few times a month scored 21 points lower in reading than those who were less frequently bullied.“
OECD (Hrsg.), Equity and Inclusion in Education – Finding Strength through Diversity (2023), S. 249.