Lets do some math.
My wife has, typically, 160 students in her classes.
If only one out of every hundred kids were sick and could transmit it, there is an 80% chance that at least one of them would be in her classes. (.99 to the 160th power=odds that none of them have it)
The odds that none of the 3000 kids and staff have it, is a number so small excel cannot display it, even in scientific format. I am not even sure the program tried.
Typical class room has them packed in at 26 to 32 students each. Social distancing guidelines would mean that would be about 7 or so, given the dimensions of her classroom.
Let's assume you want to have open schools with masks and distancing.
YWho is teaching the other 23 kids? Assuming you maybe push it. You need one teacher per what? 8 students? You now need four times as many qualified teachers.
Assume you magic THAT up.... Where do you put these other classes? Instabuild three or four new schools, with modulars, bathrooms?
... and if you have some portion of them do distance learning, which seems to be the case... why ing have the in person exposure.
Reopening schools.. what a ing joke idea, from a joke administration, defended by people who are jokes.
Except no one is laughing.