Well said @TheHoneyBadger.
This is such a huge problem. It impacts not just on the teaching staff and pupils, not just on their families, but on the whole of society. The way things are looking, in any one school there will be children having to return home and isolate while waiting for test results, an outbreak happening in a bubble (which could well spread widely before anyone gets symptoms), shutting down year groups, or entire schools - and then parents' work may be affected because they need to look after the children/collect them at later times, etc.
That's all without factoring in the actual impacts of any illness on people's current and future health, and the impacts of grief too.
It seems insane to be going into this with so few resources provided for state schools. As with everything else, I suppose if they just leave schools to cope however they can, then if there are outbreaks the government can blame the schools, rather than taking any kind of responsibility for investing in more equipment/internet access/safer empty public spaces for schools to utilise as annexes.
It's almost like they don't really care.