First, the primary concern of your day should be about getting the education you need. I understand that there is fighting going on in your school, but for the most part, thats people getting involved in the politics, groups, and goings on that have nothing to do with the actual reason you are there.
In other words, if you keep to the people that you know are your friends, mind your business, and dont get involved...for the most part you can walk thru any school only minorly bothered by all of that.
But if you do have to fight...trust me when I tell you that boxing and wrestling have no hope of helping you. Unless you have blinding speed (comic book like) and can hit eight people simultaneously, or you have SEVERLY long arms and can wrestle all twelve people at the same time (grabbing one and taking them to the ground leaves you at the bottom of the pile getting kicked by everyone else)....its not a good idea.
If you find yourself cornered...and you think your life is threatened...you find something either blunt (like a stick) or bladed (like a knife)...and the first thing that comes vaguely close to you...completely trash it. If that means picking up a jagged piece of metal off the ground and ramming it into someones eye....than do it....and while everyone else is trying to figure out why blood is squirting out of his head...RUN LIKE HELL!!!!!
But understand....once you decide to do that....they will be waiting for you the next day.
So....best bet....dont worry about proving yourself to people that will never give you respect and want to see you hurt. Dont involve yourself with their affairs...and in kind...you wont be effected by them.