Students Are Making a ‘Surprising’ Rebound From Pandemic Closures. But Some May Never Catch Up.

Elementary and middle-school students have made up significant ground since pandemic school closings in 2020 — but they are nowhere close to being fully caught up, according to the first detailed national study of how much U.S. students are recovering.

Overall in math, a subject where learning loss has been greatest, students have made up about a third of what they lost. In reading, they have made up a quarter, according to the new analysis of standardized test score data led by researchers at Stanford and Harvard.

The findings suggest that the United States has averted...