There is a dangerous level of cognitive dissonance around school closures that effects nearly everyone. I have to filter arguments by finding out if the people making them have or do not have kids in school. People with kids in school just want schools open. Teachers and administrators want schools open. ...and therefore politicians want schools open.
There are a lot of vested interests that bias toward opening schools.
Honestly I do not think we are capable of weighing particulars to make a scientific determination. We need policies around school closure that are rigidly followed in the course of a pandemic.