The preparation of students in the world is collapsing vertically. Average performance in OECD countries fell by 16 points in mathematics and 11 points in reading. This is roughly equivalent to half a school year in reading and three-quarters of a school year in math. On a positive note, the average performance in science has not changed significantly. The reason may not only be Covid: the analysis of trends before 2018 reveals that results in reading and science began to decline well before the pandemic; This indicates that longer-term problems are also at stake. Thus the OECD Pisa report.
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