And some conflicting news
https://www.theguardian.com/world/2020/may/18/french-minister-tells-of-risks-of-missing-school-as-more-pupils-return-covid-19
“So far we haven’t heard anything negative about the reopening of schools but it is probably too early to have final conclusions on that.”
https://abcnews.go.com/Health/wireStory/70-cases-covid-19-french-schools-days-opening-70740749
Just one week after a third of French children went back to school in an easing of the coronavirus lockdown, there’s been a worrying flareup of about 70 COVID-19 cases linked to schools