@Aragog "Through this thread I get the impression that this is really nothing to do with education and almost entirely about childcare."
For me, it's partly childcare (I'll have to quit my job if schools don't go back fully and my DC end up being in on different days (one at Nursery, one at school)), but it's also about socialisation. Ideally I'd love them to have their usual standard of education, but not at the expense of teachers and TAs being run ragged.
If things have to change for a couple of months, so be it.
I'd be happy with parent volunteers helping out (with background checks, obviously), with TAs teaching lessons (this has happened before in DS class, for the odd day here and there) if it means he's in school, socialising with other kids. He's only in Yr 1, and obviously it's completely different above foundation stage, but at his age he can learn a lot by playing and cutting and sticking for a few weeks.
I'd happily volunteer to go in on one of my days off, and make pasta necklaces or help them paint cardboard boxes or something as long as there's a TA or someone in the room who knows the kids well, and can lead the actual activity. It'll be better for DS than being at home with me all day for 3 days a week.
His teacher has enough to do without needing to teach half the class some days and then provide home learning for the other half on those days.
Teachers are best placed to decide on the details of how things could work; they need government funding and back up, and parents who are willing to do what they can.
I've heard of people who've offered to go in and help out, and would have been fab, but there's too much that needs to be worked out - eg one friend who works in the "education centre" at a local zoo volunteered to help in her DCs school - Principal would have taken her in a heartbeat, but can't, because she's not sure what would happen if this person had an accident in the school, or a pupil fell while she was there (even if the teacher was also there and my friend was at the other end of the room) - he could have investigated, but he's snowed under with other things. He needs the government to say that volunteers will be covered by the same insurance as regular staff, and subject to the same safeguards etc, but they've done nothing. Government won't take responsibility for anything, and are throwing it back on schools to take decisions.