"School closures in spring linked to drastic decrease in Covid-19 cases and deaths"

"Journal of the American Medical Association shows that closing all of a state’s schools was associated with a drastic decrease in both Covid-19 cases and deaths. And the point at which officials made that call mattered: Those states that adopted the policy while few people were testing positive saw a correlated flatter curve of cases."
"The new study doesn’t show cause and effect, only an association between school closures and case counts in an area."

https://www.statnews.com/2020/07/29/school-reopening-covid19-cases/