DENVER (CNN) -- A teenager in Denver is facing charges after she was caught on camera beating another girl.
The victim, who doesn't want to be named, said she's complained for weeks that she was being bullied, but teachers didn't do anything about it.
But on Friday, the alleged bully reportedly staged a disturbance to get a teacher out of the classroom. Once the teacher went into the hall, fists started flying.
The school says dozens of students helped the bully set up the attack and filmed it, so they could all face charges as well.
Denver police are also investigating because the girl is also being threatened on Facebook.