Swiss 15-year-olds scored well for mathematics in an international survey published on Tuesday. They are also above average for science and reading. But 25% of Swiss pupils failed to reach the minimum level in reading.

The latest PISA survey from the Organisation for Economic Co-operation and Development (OECD), published on Tuesday, found that Swiss 15-year-olds scored 508 points on the PISA scale in 2022, compared with an average of 472 points. Six countries scored better, all in East Asia.

Estonian students had a similar level to Switzerland in maths; 73 countries score lower, including France, Germany, Italy and Austria. ...