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PISA 2018: On average across OECD countries, students who had skipped a whole day of school in the two weeks prior to the PISA test scored 40 points lower ...

PISA 2018: „On average across OECD countries, students who had skipped a whole day of school in the two weeks prior to the PISA test scored 40 points lower than students who had not skipped school during the same period. […] On average across OECD countries, skipping some classes was associated with a decline of 37 score points in reading performance; arriving late for school was associated with a drop of 26 score points, after accounting for the socio-economic profile of students and schools.“
OECD (Hrsg.), „PISA 2018 Results. What School Life Means for Students’ Lives“ (2019), S. 80