Please can anyone offer any advice. Ds going through a bit of a challenging stage. Always been a good boy so this is v difficult for me. He's becoming v defiant at home and a bit of a know it all like to try and tell everybody what to do. This has been going on the last couple of weeks. However been a lot better this last week or so. But teacher tells me he's getting involved in class telling others to do things which have nothing to do with him at all. Do you have any suggestions he has always been a great boy at school in all top groups behaviour never challenging before. I believe this was an isolated couple of incidents yesterday but teacher obv felt need to tell me. I don't know whether he's going through the testosterone surge stage and is trying to assert himself too much. He's always been confident but now it's becoming a bit not nice. Any advice very welcome