Its a complex issue. I've been to schools in England where they would have liked to ban students bringing their own food in to school at all (mostly because of an excess of soft drinks and packaged crisps). To me, however (as someone who always had a packed lunch in Australia) there was something very 'police state' about this. It seems to really be saying that the state doesnt believe that parents are capable of bringing up their own children (not just that a few might need financial help to do so)...