There was a useful picture on here a while ago but I can’t find it sorry. Phone call from Dd school at 9 last Thursday to say teaching asst had positive lat flow weds. (Confirmed positive pcr Thursday. She had to isolate until Friday midnight which is fine. We’ve had another message this morning to say class teacher also had positive pcr and to extend to Sunday. I thought once they were isolating that was it. If other class members keep testing positive can they keep extending ? Thanks