[yokaze]

The problem is less for the children, but the social environment they live in. And that doesn't end at the teachers or their parents.

To my knowledge, the grand-parents have a much greater role in child-care in Spain and Italy, than in Germany and Sweden. To complicate matters, closing all schools and kindergardens even increased their importance, as parents still had to work somehow. Probably, closing the schools _might_ have even made things worse, as someone has to take care of them.

But that is not necessarily an argument in favour of opening them again. It shows, how children, while largely unaffected, have potentially a huge impact on the spread of the virus.