*scratches head* I've never seen a fight break out at my public school, and certainly no one's ever targeted me--in my case, if physical violence was involved in an incident, I was the one who used it in an effort to force a verbal tormentor to leave me alone! (That was middle school. Kids are AWFUL in middle school. High school is much, much better.) As for stopping tormenting, I never figured there was a "code not to grass" at my middle school, and easily made friends with my counselor, who was also trying to figure out how the girls in the class "felt" in the style of Queen Bees and Wannabes and so often invited my friends and me to lunch, where we happily had fun talking to her. Making friends with counselors, if at all possible, is generally a good idea. I have also found that it pays to befriend the librarian and/or at least one teacher, because if you can do so you have an automatic "safe place" that you can go to during lunch if the cafeteria is too loathsome or if your study hall has a particularly annoying student in it, or similar. Libraries are usually the best, I think.
As for not being a target, first off try not to correct people too much, lie about your accomplishments (this seems obvious but there is one kid in my grade that everyone seems to hate because apparantly he believes himself to be much more popular, intelligent, etc. than he really is and cannot take a hint. I don't think he has AS that I can see--he's in my Physics class--and I don't see what everyone hates about him, as he's no more annoying in my eyes than half the other guys I've known, but then I've never spoken directly to him), etc. I've always found that being quiet and withdrawn until I can scope out what I need to know about the various people I have to interact with before making any overtures is a good idea, but perhaps you are more extroverted? Um... joining academic clubs or, if you are musically proficient, band is a good idea. In my experience, band people and academic geeks are very friendly to more introverted people and tend to be thrilled by deep reservoirs of knowledge on obscure topics, especially if the knowledge is related to the academic subject in the case of academic geeks.
If you can handle the courseload, I would take as many honors, AP, or equivelant classes as possible. In my experience, the students enrolled in such courses are far more willing to get to work and learn in class rather than mess about and possibly torment the Aspie kid. In addition, they tend to value knowledge much more. Also, the classes are more intellectually stimulating. You will be told that it is all very hard and it is impossible to take, say, more than one AP class or all honors classes. Take this with a large heaping of salt, especially if you learn quickly.
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cogito, ergo sum.
non cogitas, ergo non es.