I'm wondering how many people who are determined to stay home at all costs will quietly slip the kids back to school if a) home learning support stops, and b) they aren't allowed to keep the school place.
If schools go back I can understand there being a grace period where attendance isn't mandatory, in fact I expect it'll be very useful for a while if they want to only have half or thirds of a year group in at a time so that they can try to do some social distancing. But it's not going to be like that for the next year, it would be insane. At some point schools are going to say, if you aren't using the place, it's going to someone else, and no, teachers aren't going to keep sending work to do from home, they are already working in school. I expect a few die hard dementors will pull the kids out and homeschool, but I can't imagine that there'll be a huge number of parents who are willing to cut their kids off from school completely like that.