Bags of rubbish?

It used to be wheelie bins that risked needing their own sub-blog, but pointless school regulations are fast catching up.  Most recent case is a secondary school in Cheltenham where girls are being sent home for turning up with designer handbags. Quite what the objection is is not clear - the headmaster has advised parents that students should have bags which will accommodate text books and A4 folders, but why this requirement should exclude designer bags is not obvious - to me, anyway. I've said it before - can schools please remember that their primary function is to teach and keep their noses out of peripheral matters which have nothing to do with teaching.