25.01.2024 Schools throughout the world closed in response to COVID-19 beginning in 2020. In a few cases, they quickly reopened, but in some countries, they remained closed far longer.
Country studies show large learning losses, which could cost this generation of students trillions of dollars in lifetime earnings. Global studies also document significant learning losses. International grade 4 reading scores declined an average of 33 percent of a standard deviation, equivalent to losing more than a year of schooling. Distance learning during the school closures does not seem to have helped very much.