A student is beaten up inside a Denver, Colorado classroom-- and it's caught on cellphone video.
It happened in a middle school; a 14-year-old girl left to defend herself when another girl assaulted her.
The other student knocked her victim to the floor and punched her repeatedly-- viscously hitting her in the face and body.
The victim's mom found about the incident from another parent-- not the school.
"My daughter is the one who was severely hurt,” the victim’s mother said, “Was sitting alone in a nurse's office, and I still wasn't called.”
Several other students are accused of creating a disturbance in the hall to lure the teacher away before the assault.
The victim says she's still getting threats on Facebook. The school and Denver Police are investigating.