You need to speak to your Union. It's not on for so many temporary contracts to be issued, one after the other. There are others on here who know more about employment Law and can offer advice on when you should be entitled to a permanent contract . The union should know too. As things stand, if you fell pregnant in the 2011/12 school year and hadn't established rights to having a permanent contract, the school would be unlikely to renew in Sept 2012.