A weird dream...

Tossed and turned in my sleep -- I'm walking to school and some people start to shoot at me, except one guy who tosses me a gun so I shoot the attackers. Then I'm sneaking back into her class and I put a poster project up on the wall just like everyone else and go around to evaluate them, but she sees me and says, "why are you here again? I thought I told you I didn't want you here anymore!" So I pack my bag, and one friend comes over with my poster, returning it to me, and whispers, "you did it wrong anyway." I communicate with her in writing, saying "it was worth a try," and underlining someone's comment scrawled on the poster which read something like "this choir is complete without you." She nods, saying that I could phone her later, but not to talk now because she would be punished for talking to me. So I go look for maybe an adult, a teacher I can trust, but all he and others would say is few in words: "you shouldn't do this, but I can't help you. I can't talk to you." So sadly I walk home, and all the way people on the streets are throwing things at me, but I only run faster, not realizing I could still shoot them if I wanted to...

...just how much power does she have? Do people believe in what she says because they really do or just pretend to out of fear?