I didn't have to tell anyone, someone saw my cut up leg while in pe changing room and told the teacher, then she told my form tutor who wanted to talk to me. She was a really sweet lady and knew me quite well and the way I was so she told me to see the school nurse. She said it's all confidential, unless I'm planning on seriously harming myself then she will need to talk to someone. I told her about my home situation which to this day is absolute crap... So my dad never found out. They didn't help me really and I didn't want to talk to people from school because I'm already the weird girl. I suggest going to your gp because schools are not the best place for dealing with such serious things..
Thought he was 19... really he's 14