we reported how the number of schools with confirmed cases had risen to more than 65. Since then almost two dozen more have closed to certain classes and year groups.While some high schools are sending home entire year groups of around 200 pupils, others say they are now restricting the self-isolations to close contacts of the confirmed cases - using seating plans to help identify those individuals they feel are at risk.Salford City Academy in Eccles has sent home a number of Year 7 pupils after a positive case there.