The world's 15-year-olds are reading, calculating and reasoning at the weakest levels recorded since global testing began 25 years ago, according to the OECD's PISA 2025 results released on Tuesday.
The assessment covered more than 760,000 students representing about 33 million 15-year-olds across 91 countries and economies. It found that average performance across OECD countries was the lowest recorded so far in all three core subjects; science, reading and mathematics.
