Dispatch
OECD PISA 2025: daily AI users score 28 points lower in science, but weekly users beat everyone
The report released 8 September covers more than 760,000 students across 91 countries, the largest PISA sample ever. Fifteen-year-olds who never use AI to draft writing assignments scored 509 in science against 481 for daily users, a 28-point gap adjusted for socio-economic status and worth roughly a year and a half of teaching, widening to nearly 30 points on summarization tasks. The finding that gets dropped from the headlines is non-linear: students using AI once or twice a week outperform both daily users and abstainers, and among those who say they use it 'to help me learn,' weekly users beat every other group.
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