Very interesting papers from Sweden and Germany. The first shows that open schools very marginally increased the infection rate for parents but doubled the rate for teachers.
This paper has a slight flaw I feel as it would be good to compare lower school teacher risk to the risk of all occupations not working from home, to address the question of how much is normal excess risk from leaving the home vs special risk of schools.
www.medrxiv.org/content/10.1101/2020.10.13.20211359v1
This is very nicely complemented by a new study from Germany which says
“Over a large number of specifications, sub-group analyses and robustness checks, we do not find any evidence of a positive effect of school re-openings on case numbers. On the contrary, our preferred specification indicates that the end of summer breaks had a negative effect on the number of new confirmed cases.”
ftp.iza.org/dp13790.pdf