www.bmj.com/content/374/bmj.n2060?utm_source=twitter&utm_medium=social&utm_term=hootsuite&utm_content=sme&utm_campaign=usage
Unlike previous studies, this one actually looked at periods when schools were open and compared like-with-like for those periods.
Compared with adults of working age who are otherwise similar, teachers and their household members were not found to be at increased risk of hospital admission with covid-19 and were found to be at lower risk of severe covid-19. These findings should reassure those who are engaged in face-to-face teaching.
This should not be taken to mean that we should do schooling with no mitigations whatsoever--I'd be in favor of doing indoor masks for kids and teachers till the winter is over if it was up to me, and ventilation is always a good thing anyway. However, at least this should provide some reassurance for teachers and families. And in my opinion, this kind of thing should settle the argument on having any further school closures; mitigations are one thing, but schools absolutely must remain open IMO.