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„Across OECD countries, students who had skipped some classes or arrived late for school at least once during the two weeks prior to the PISA test were about twice more likely to be low performers in mathematics than those who had not skipped classes or arrived late for school, after accounting for their socio-economic status, gender, immigrant background and attendance at pre-primary education.“

OECD (Hrsg.), „Low-Performing Students“ (2016), S. 104