The low wage babysitters is a legit one. in a broader sense. I mean many people can't work without child care that doesn't exist without community child care, and which isn't affordable without schools. There's really no in between
what do you do if you've got a 7 year old and a 5 year old and need to work 8-5 M-F at a production plant. Send em to school, go to work. You could send em off with your gransparents, and they take em to the park and all the grandparents die which is kinda what drove a lot of the deaths in Italy early on. I just mean it's very much not simple
and for kids it's super hard, school is their primary socialization and arguably for many ages the main thing they need from it is developing socially. Not seeing anyone but your parents or going out to play for months, that's an eternity to a kid, and it's absolutely going to have massive repurcussions.
So yes containing the virus is critical but it's not easy to keep schools closed or even virtual only because they provide other things that our society's come to rely on - and it's not necessarily a bad thing that school doubles as a free babysitter for low income earners, like that's kindof a good thing. Yes I agree theres a shortage of support for poor families, but the fact that school can act as a support is pretty great - normally.
Then what are your choices - cut off schools, some fraction of parents can't work (my wife had to quit her job since we can't send our kid to school) and poverty and depression ensues. Then we gotta fill that with social welfare which it seems obvious should be a priority but that money has to come from somewhere, and the labor is still required too, I mean that's how we function. I don't know I think the best balance probably would be rigid enforcement of safety protocols, limited class sizes etc, a lot of the things we're trying, and really improving healthcare overall and workers rights so that PEOPLE CAN STAY HOME WHEN THEY OR KIDS ARE FEELING SICK. because right now THAT seems to be the boot really grinding this pandemic into the backs of workers. Not just that they don't earn enough, that theres shit for support and this insane "get back to work 3 days after getting out of the hospital while still visibly sick" message from our president, and our healthcare is so fucked that going to the doctor and missing a day of work is the potential difference between paying rent this month or not, so you have to work which means your kid has to goto school even if you're one or both sick, and we're extra fucked.
Anyway, my point is just that the answer isn't as obvious as it might seem because all possible scenarios suck. I mean this is a global pandemic and it sucks, theres no silver bullet or easy win, we just gotta try to pick the least painful loss. And honestly this country has fucking epically blown it...