Thanks for your advice. His favourite thing that he loves to do is be the line leader for when we leave the room. We ban him from doing this if he is being unkind/silly etc but by taking this away he acts up even worse. It seems his attitude is: "If I can't do that, then there's no point in me being good!" When he is good, we let him be the line leader but this never leads to him wanting to do good all the time. Even when he is being good but we choose someone else, he has a massive tantrum! At this point, we say acknowledge that he is being good and then explain that we need to let our friends have a turn. One thing that the LA SENCo did say was that she thought he was suffering from low self esteem and this usually represents in the way this boy is acting. She saw him being kind at 10.30 then at 11.30 he was acting up and that's when my supervisor had to step in. She gave him praise at 10.30 then within the hour he had upset and was wanting to provoke a response. It's almost as if the boy says to himself, "Who can I wind up today?" I like your idea of ignoring him and then let him return to his activity - that way he won't get the response he needs from the staff and the kids. Will try that tomorrow!