KayAnn, chin up girl. Just keep on walking. I know how you feel. We change in high school in Year 7 here - I don't respond well to change at all, and after seven years of primary school with a small very close group of friends going into a huge high school was a big deal. I cried every night for a long time, and begged my parents to homeschool me, but they just didn't feel like they had the ability to do it well enough. It took me almost two years....probably until the end of year 8, until school started to become ok. I still don't enjoy it...but it can become bearable. Like what other people have mentioned in this thread, try to make school specifically about the schoolwork, and forget about the social side of it. After all, you are only there to be educated.
And the other thing that helped me...was to think about it day by day. Never think about the accumulative work that you will be required to do over the next couple of years. Just think in the very very short term. Like, be glad if you're having a good day and don't think that tomorrow might be bad. Just enjoy what you're doing and never look too far ahead to what might be, just what is.
And during the day...think of Simba, I guess. It won't work for you but I always run through my Buffy songs at school, hum them in my head while I work, because that always makes me happier . Run through the lyrics of songs and think inside your own personal world, your imagination and your brain. It's the safest place in the world because no one can reach you in there. You can think anything in the world inside your head, and who can ever find out?
I hope you had an ok day today, and that things get easier. Thinking of you.