I have a particular problem with a girl in my class and it seems to be getting worse not better. Its hard to explain. She is always pushing the rules but if I ask her to comply she does - which is an achievement because she doesn't comply with everyone. However it is always with a sneer/attitude. When she does something like talk under me then I can follow sanctions which I do. Yet her sneering and disbarraging attitude is very difficult. But I don't know - can you punish someone for their face/tone of voice? For example today I was talking to another student and I could sense giggles so I looked behind me and she was sneering away and rolling her eyes at me. When I asked 'what was going on' she she answered me but the tone was horrible. She is year 10 and so immature. It is impossible to have a normal conversation with the girl. She is the 'leader' of her little group and she reigns over them with fear. I know its all a status game but I don't know what to do. Any suggestions? Many thanks .