I have a bright idea from Denmark: don’t send kids to school until they are 6 years old. There is not the space in UK schools to enable younger children to learn through play safely whilst we have a pandemic going on - they should be in different settings altogether, not hogging the entire school so that older children never have any space to go back.
As for older children: to fit 15 children in the average sized primary school classroom, you are already breaking the rules on social distancing. 10-11 children would be an absolute maximum - provided they stay put in their seat. So where are we going to find the space and the teaching staff for this? Mobile classrooms are not sufficient - buildings not designed as schools will need to be taken over and adapted.
Along with lack of IT and broadband connections in poorer households is the problem of inadequate clothing - children coming to school without coats, holes in shoes, etc. This needs addressing if children are to spend more time being educated outside. Who is going to fund this? How will borrowed clothing be kept clean?
Currently, cleaning is an issue in schools - primary schools in particular often find it hard to find reliable cleaning staff who turn up every day, so constant cleaning, sterilising of toys, unblocking toilets, etc, has to be done by people not employed to do it - not so easy once they are all back in the classrooms teaching tiny numbers of children. More money is needed to help keep schools clean, because clearly at the moment pay and hours offered for school cleaning staff is insufficient to attract people to do it (same with lunchtime supervisors, many of whom also call in sick with great regularity even when there isn’t a pandemic to worry about).
Provision of school meals will be an issue - if cooked meals are provided, where will they be eaten? Even if having constant meal sittings all day in the average school dinner hall, you won’t safely feed an entire school of children. So will it have to be sandwiches in the classroom/in the fresh air, even for vulnerable children who may not be getting much nourishment at home?
Something tells me most teaching is still going to be taking place from a distance, not in school, for a long time, even if there are increasing opportunities for children of all ages to pop into school for a few hours once or twice a week.