I actually agree that in this instance, leaving the decision to as late as possible will be for the best (it will give more time to analyse the data. As PP have said, today is 9/10 days since kids were last in school so we need to see how the rates are over the coming week to get the best idea how effective closing schools will be)
Its an utter pain in the arse to be told at the 11th hour but I can understand why this could be the case.
FWIW I'm tier 4, no cases in the school until the last week but then it exploded. I also WFH and have a toddler. I don't want to home schol but I will if need be and I'll accept it at the last minute as well.
I've ordered printer ink, some work books for my 6yo and 8yo and we have plenty of reading books.