Okay. So the problem is that your shy. Well, that's really okay! A lot of people will be new at the school too, Bianca so you will get along fine. Look at a person that seems nice (totally not those snobby girls!) and go up to her, and just say "Hi."
Confidence? Wanna get rid of your shyness? FAKE IT TILL U MAKE It.
I hope it wasn't as hard making your friends at your school. Your friends with GUYS, and guys are more crazier than girls xD
It isn't hard, try practicing it or something. Just introduce yourself to someone you see is nice, spice up a convo, and become great friends. Blurt it out, of you think you'll feel shy.
On the other hand, if you REALLY REALLY wanna stay back at your old school, have a serious talk with your adult. She or He should understand how you feel.
i really hope I helped...
"Stand up for your rights, even if it means standing ALONE." -Unknown.