What is a high school student's full rights in this situation?

At the end of the 2010-2011 school year, I was being constantly harassed verbally and sexually by this one boy at lunch. A few examples would be that I would talk to someone and he's butt in and I'd tell him to go away and he'd freak out using all sorts of profanity. So one day, he and his friend decided to "confront" me without my boyfriend there and continued with their harassment. Before this, I had been to the office 3 times I believe and filled out only 1 or 2 of the papers describing the incident. Beforehand, I had already visited the office but was never called up. After this incident, I went to the office to say that this was the final time I was going to deal with them. After school, I met my boyfriend and saw the same boy with a girl hitting him, her yelling not to hit her. I rushed over and told him that was wrong and raised my leg (I was about 2 or 3 feet away, so I couldn't've kicked him if I wanted to) and said "I could kick you if I wanted to," which is not considered a threat via the circumstances. He grabbed my thigh and bruised me. I began hitting him and yelled for him to never hit me again. My boyfriend ran up and pushed him to get him away, but the kid flew. All in all, they ended up fighting. We all were suspended. However, everything could've easily been avoided if they had called him up and told him to quit. I had gone to the office on several occasions, even twice in one day. Also, this wasn't the first time I was personally punished unfairly. A princple had physically grabbed my arm earlier that year and dragged me down a hill. Another unfairly released confidential information. So I live in AZ and I'm 17, what can I do to fight this cruel administration that abuses their power?