kay bro, there is 20 ways this can go:
1.) If you live in the hood, stfu, and only talk when somebody say something to you. If somebody say "what up" you say "whuz gud". If the teacher asks you a question, give the shortest answer you possibly can, Sound smart, but dont sound like a nerd. Everyohne in your class should be freshman too, so they probly feel the same way you do. Now, dont act like a tough guy even if you are, and dont wanna get into fights. Cause thats your 2dt ticket into one. You'll pick up friends on the way, and if your secretly weird, supress that weirdness until your absolutly sure that you have friends like you. This may go on for years if you are. I am too. lol.
2.) If you live in a neighborhood where you can leave your car door unlocked, Gunshots aren't like doorbells, friendly people everywhere, humble folks without temtation, Ample parking day or night, people shouting howdy neighbor, i might be a bit easier.
Just be yourself, and dont worry about what other people think, your friends will come along that way.