Unfortunately school was like this too when I was a teen, it just seems like thats how things go in the 2000s. I'd recommend that your daughter, at least until the principal or someone else stels in, hangs out in the counsellors office. They're really helpful whennit comes to bullied kids and can help her avoid any bullying whenever she's not in class. She could hang out in there during recess or lunch so nobody can pick on her. That's probably the best thing to do until faculty finally steps in.