18.11.2023 The evidence is now in, and it is startling. The school closures that took 50 million children out of classrooms at the start of the pandemic may prove to be the most damaging disruption in the history of American education. It also set student progress in math and reading back by two decades and widened the achievement gap that separates poor and wealthy children.
https://www.nytimes.com/2023/11/18/opinion/pandemic-school-learning-loss.html