Lots of people have minimised and turned a blind eye to the limitations of the bubble system, and especially as the guidance hasnt changed since the Wuhan variant has been be replaced by all of a cc and now delta. Many people on here have said "schools are fine as there have been no cases in my school etc". This is because systems have not been stress tested, rather than guidance being workable.
At secondaries, bubbles were Initially sent home when there was a single case back in September. Most secondaries switched to some form of contact tracing when there vwere so many cases it happened multiple times within weeks.
This required a list of friendship groups and detailed seating plans. To be honest, the school Im at has never implemented this properly as no one has ever checked which desks are within 2m of another in each of the 12 rooms for each case probably because it happens so often
Unless the primary school has some clear systems in place to monitor who is exposed to they will have to send the whole bubble home
when they liaise with public health they will be asked if they can identify close contacts. If they say no because they haven't got systems in place ( because there have been few cases so far): the advice would be to send the bubble home.
Now you might think they could work it out but staffing levels in primaries are lower and
Staff have no training or background in contact tracing which is added on to all their other duties, have limited time to sort out arrangements communicate with parents, and need to be confident they don't make mistakes
I get it is frustrating but honestly it is ridiculous that we spent 37bn on track and trace and the government have never had workable procedures in place for schools. This shit has been going on all year in a lot of places, but a lot of people turned a blind eye to it It is just that with Delta being more transmissible more people are more realising how badly covid outbreaks in schools have been handled