This is security theater, like taking your shoes off at the airport, it does nothing to keep you safe. Instead it makes people feel better, in this case the school for letting your children spread this virus without a care.
School, I would like to consider myself a lifelong student, but formal instruction is a little different than learning on the job or via the web. With classes starting, my stress seems to be slowly ratcheting up. Oh I’ll be fine, I’m taking an online course this term, I’m worried about everyone else.