New York City had hybrid in-person and remote as an option, so only about 4 months were remote for most students. Seems like a perfect A/B test case to test the theory that a remote learning was actually associated with cognitive decline 5 years later. Meanwhile every year since 2020 there have been studies published from nearly every country on the neurological and cognitive damage from mild covid cases. Seems to be more of a cognitive dissonance issue, that people don't want to confront the elephant in the room. 100 years ago when TB and Polio were taken more seriously than today, the common solution was fresh air. Schools today are even more sealed off to the point where a simple lack of oxygen starts to noticeably reduce cognitive ability after a few minutes.