Under regulations, schools are expected to be open for 190 days, or 380 sessions, each year. As I suggested in my initial Answer, it is also important that there is local co-ordination around holiday dates in order to support parents and to ensure consistency, in the way the noble Lord described.
I think the noble Lord started by saying that this makes it more difficult to recruit teachers. Of course, while it is important that children have a fixed week and a specified number of days, it is of course possible, as has been the case, to develop more flexible ways in which teachers can work. The department is keen to promote that by, for example, funding a programme focused on embedding flexible working in schools. I hope that will be one of the things that will enable us to improve teacher recruitment.