I think they should be closed because, theoretically speaking, kids/teens spread germs WAY more than adults typically do. I mean ya I get that people want to go to school because they have difficulty learning on computer (or whatever device), than with face-to-face interaction with adults. And people may or may not realize that their kids are not the only ones at risk for going back to school, the teachers are too. Because if you think about it, teachers with kids in the classroom have to make sure everyone has their masks on, they have to sanitize the place, keep people from coming into close contact with each other, etc. So in all, I think public schools should be closed.
