I have no friends outside of school either, but if you run into the right people you can get a good friendship going along. Also if you get a dorm or room at the college its likely you might have a roommate or two. So likely you will have someone to be your friend.
I have never made any solid friendships with old classmates though, but I am trying now. I am also trying to beg other people on the internet to talk to me seems like noone listens though.