The only way to give all children a chance of fair education is to drop the social distancing. My DCs (y2 & y4) can not go to school because half classes of yN, yR, y1, y6 & KW take up the full capacity of the avaliable space and rooms. There is no space or staff for them to be appropriately educated.
Secondaries can not hope to social distance or "bubble" 1000-2000 students and have them taught by specialist staff. It is either business as usual or continued substandard education that polarises advantage and disadvantage.
If I still taught I would happily go back in with normal timetabling. I would happily resume my usual supporting in the DC's school with mixed classes. As a teacher you always are exposed to whatever bugs are circulating and your immune system adapts accordingly. Teaching never has been risk free.
Children need their peers for social development and collaborative learning is a vital part of education as is rolemodelling from peers.
Months and months of social distancing and isolation from their peers is frankly cruel to children. It is denying their needs abd their rights to an education.
If I'd written a year ago "AIBU to keep my child off school, keep them in the house, only allow them out for a bike ride/ walk, and distance them from extended family and friends for 3-6 months" I would have been told unaminously that I was being not only inreasonable but abusive too.
At present the costs of social distancing on young people are causing far more damage than the virus we are trying to protect ourselves from. More teenagers have died from suicide since March than Coronavirus.