Thanks for your replies, glad to know it's not just me! I will definitely write down any incidents in the future. In fact I used that today in a different school where a delightful Y5 boy told me that I couldn't send him out because he'd tell the head teacher that I was lying and he had done nothing wrong. His face was a picture when I started reading a list of incidents complete with times. I have to say, this week has been the worst of my supply 'career' so far! I know what you mean about the 'He doesn't usually behave like that' and the 'Well, they behave for me' comments. It really makes my blood boil! They might as well say, 'I am obviously a much better teacher than you as you are just a supply teacher who isn't good enought to get a proper job!' Another thing that really gets to me is the fact that school's automatically assume that as a supply teacher you must be inexperienced. Don't these people have any idea of how dire the job situation is in their own profession?