Ds aged 7.5 is a sensitive boy but not overly sensitive. The deputy head seems to think it's ok to comment negatively on his hairstyles (he chooses his own haircuts which I think are pretty funky and there is no school rule on haircuts) and teases him about his surname which is a German sounding one so she makes it sound like Schultz out of Hogan's Heroes. He says she laughs when she does it. He has complained before but said 'I cant say anything mum because you have to respect teachers'. I have told him 'you don't respect her because she's a teacher. You respect her as fellow human being'. I don't feel she is respecting him in fact she's using her position of power to enable herself to bully him. I know what i'm going to do but what would you do?