Since when one learns at school? You go there, listen some guys and then go back home and there the real learning happens: when you sit down, alone, facing a blank paper or a problem you need to solve based on the notes you took while at school.

That's an interesting way to investigate how much public policy surrounding schools is actually focused on student education. I think you'd find that there would be significant fear around crime in an environment that already has a heightened risk of riots. For younger students the debate would shift to burden of additional childcare.

That's been a thing for a long time. "Hitzefrei".

In Germany that's already a thing afaik