> But you need to provide daycare at least for some children.

Here's a problem: what's the difference between state-provided daycare and school, from an infectious disease standpoint?

Both are a bunch of kids in one building, attended to by adults. Both will require busing kids to said building, with buses driven by adults.

Might as well just leave the schools open.

I don't have a solution, just pointing out that daycare == school for this situation, so closing schools but providing daycare in it's stead won't make a difference.