Math scores for U.S. students hit an all-time low on an international exam.

The PISA exam, given to students in 81 countries, was the first comparison of global achievement since the pandemic upended education. 15-year-olds in the U.S. had a 13-percentage-point plunge in math scores between 2018 and 2022. But the U.S.’s relative ranking still improved compared with other countries.