Here in the ATX, cases are on the rise, and so are hospitalizations, which subsequently implies deaths will be rising soon as well, unfortunately.
The state and city have some hurdles/thresholds for keeping schools open, which are based on the numbers for absolute cases normalized by population, % positivity rate, and a few other things.
So, even though spread within the school building itself is really not a thing here, the status of the surrounding community will affect the go/no-go call on continuing to permit in-person school
I don't think that makes any sense at all, but there you have it.
France recently reenacted pretty strict lockdown protocols, but left their schools open for in-person learning, and their numbers seem to have peaked about two weeks ago and are now receding rapidly.