I think it’s odd that there will be no serious mitigation’s, in a place where very few people will be vaccinated. So, even if, as we know, vaccines reduce transmission, this won’t make a difference in schools at all.
I think it’s not unreasonable to keep mask wearing, especially in older secondary school children, who have to wear when they’re at college..in a room with other kids the same age.
We still have to wear them elsewhere and we’re not sat in one place for a long period of time.