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„On average across OECD countries, students who had arrived late for school at least once in the two weeks prior to the PISA assessment score 27 points lower on the science assessment than students who had never arrived late, and 23 points lower after accounting for the socio-economic profile of students and schools.“

OECD (Hrsg.), „PISA 2015 Results (Volume II): Policies and Practices for Successful Schools (2016), S. 84