I was walking infornt of my teacher and i turned around and he was looking at my wrist and looked upset. all through the day he looked at my wrist and always made eye contact do you think he saw my cuts?

Yes and don't be surprised if you get called down to the office to talk to a social worker or something. And usually school help programs are really unhelpful, you should go to a mental health clinic. I'm surprised if your parent/guardian hasn't noticed already. You might want to lie at your school though because they will tell your parents anything you say, which will probably make you uncomfortable, while an out of school therapist is not obligated to do that. Idk what your school does but I've never heard of one being of a sufficient source of help.