The hon. Gentleman shakes his head, but I shall willingly give way to him if he can explain how a limit on class size and a refusal to accept a 31st child into a class, although that may reflect the parents' preference, enhances parental preference. How does it enhance parental preference to deny parents the opportunity to put their child into the 31st place, if that is their choice and if the head teacher believes that it is consistent with the educational interests both of the 31st child and of the other 30? How does the removal of that opportunity enhance parental choice? If the hon. Gentleman wishes to argue that case, I shall give way.