As long as the bully has you as a punching bag and you keep your mouth shut, the school is happy because there's no problem for them. Do not expect a school to help you in any way. Expect them, though, to punish YOU if you dare to fight back, because then they have a real problem at their hands, because that can easily escalate to a point where external entities will notice something.
I have 7 and 10-year old sons. I have told them, on no uncertain terms, that just as bullying will never be tolerated, they have the right to defend themselves and will receive my full and energetic support, should they ever be put in that position.
Judge me if you will, but I've also advised them that while school rules are important and should be followed, but in the case of bullying, school repercussions should not be their primary concern. The stakes are too high - I was bullied and I know.
Fortunately, my guys are confident and socially adept, which I believe has helped them avoid problems thus far.