At my DC's secondary school there are rules around quarantining books for 72 hours if you hand them in. Because of the hassle involved in this, the teachers are (understandably) minimising the number of times they ask pupils to hand work in, so my DC are getting their homework marked a lot less often than usual. Surely this makes it harder for teachers to be sure the class has understood the topic properly?
I assume this is based on guidance issued a year ago, when we didn't know much about the virus transmission. Given all the latest data showing that surface transmission is very unlikely, I think the guidance should be updated with less emphasis on surface transmission (but retaining the guidance on social distancing, classroom ventilation etc).
Are your DC's schools still doing this?