I'm sure other factors were at play, but on the point about COVID in particular, we can't succumb to the logic that saving even one life is never a tradeoff for anything else of value. If we did, the speed limit would be 10 mph on the freeway, if we were even allowed to drive. Whether we like the idea of it or not, we make tradeoffs with safety versus other things every day. And that calculus will consider both the value of the other thing, and the number of people likely to be harmed. In the case of education, I would point out that it's even more crucial now than ever, with poorly educated Americans making extremely bad choices at the ballot box which could even end democracy. Not only that, we are eliminating unskilled labor with AI and robotics, and replacing it with high tech jobs, meaning it's an even bigger disadvantage these days to be without a good education than it was when we were young.
Not all of that is on COVID, of course. It's a broader conversation. But we should think very carefully about school closures should the situation arise in the future.