So, if you have 70 staff, some of whom are eligible to work and 200 children that need to be looked after - what set up reduces the social interaction percentages and ratios to the minimum? if a school brings all 70 staff, less those self isolating or on the 12 week list they are creating more interactions than necessary. Yet 30% of schools are insisting on all staff in according to Teacher Tapp today. That’s a huge unnecessary extra risk. Also, the children should be not be allowed to interact. You should have small groups of children who only ever interact with select teachers. I don’t even have the maths to do all of this. But scale this up and down the country and we have the wrong people in charge. It needs some modelling and some mathematics. Why are not mathematicians in charge of organising school provision of child care?