An art teacher at Baltimore's Reginald F. Lewis High School says she was beaten by a student in her classroom in an attack that was recorded on a cell phone camera.

Jolita Berry tells WBAL-TV the attack happened Friday. The chief of the Baltimore City school police told the station Tuesday he had not been notified of the attack and planned to begin an investigation.

The video of a classroom fight showed up on MySpace.com. Berry says the person being beaten is her.

She says the attack began when she told a female student to sit down and behave. As the girl's friends cheered her on, Berry says the girl hit her in the face.

Berry says her principal told her that telling the student she was going to defend herself triggered the attack.