Hi ilovemyabbygirl, welcome to PT!!
I agree with the others here that you can really use this opportunity to make new friends. I had the same problem when I was 15 and ended up in a class without any of my friends because I chose different subjects. I felt real lonely at first but at the end of that year I knew lots more people who I normally wouldn't have talked to, and still had my old friends aswell!!
Good luck!