Thanks both, my daughter is in a class of thirty and I have heard a 'rumour' that my husband's ex-business partner (the one whole stole everything from us) is unhappy with his daughter's current school and is looking to move her. If so, I would have to face the wife in the playground every day and the daughter would be in my daughter's class (don't think I could keep my cool if I had to see either parent on a daily basis).
Although it is 30 I think that in 'exceptional circumstances' they can go over and in some areas all schools and year groups are under these circumstances!