Just an interesting snippet, party on a river cruise ship in France, 88 guests, 2 waiters, 3 crew.
All supposed to wear masks and distance, only crew kept masks on, guest had Covid but only confirmed two days after party, by end of party 21 guests and 1 waiter infected. Crew all tested negative.
Mother and daughter amongst guests, daughter had a sleepover before they knew they were positive and gave it to her friend. Then unbelievably the mother took her to a christening the following weekend knowing they were positive.
So clearly kids can catch and pass it on.
As much as I don't like masks, but do wear them and make kids wear them, perhaps they do need to be in schools whilst kids are indoors.