I read your introduction and I'm confused - are you basing your assumptions about schizophrenia from what your doctor is actually telling you, or just from an online quiz? Introduction seems to suggest one thing, what you're saying here is another.

Anyways I hope you can control your urges about wanting to hurt others, it doesn't sound like a pleasant place to be. You might be able to see a medical practitioner confidentially at your age without them telling your parents, I'm not sure how the system works where you live.