Was wondering if i told a teacher about self harm would she have to tell my parents?

Please Clarify: Your age is listed as 48, but the question implies that you are still in your childhood or of school age. I think this is a very good question and i applaud your bravery for asking it. If your teacher is the person you most trust then please go to them and ask for help. You may be taken to the school nurse. If you worry then you could phone your pediatrician's office and tell them your concern.