Three teenagers were sentenced to community service Friday for their roles in a violent high school hazing incident that was caught on videotape.

The three were each found guilty of two counts of battery, said Tom Stanton, a spokesman for the Cook County (searchprosecutor's office.

Trevor Roberts, 18, and Sarah Rosselli, 18, were each sentenced to 18 months of supervision and 60 hours of community service. Jennifer Larson, 18, was given a year of supervision and 50 hours of community service, Stanton said.

All three also were ordered to have no contact with the victims and to undergo alcohol and drug evaluation, Stanton said.

Five teens now have been sentenced in the case. On Thursday, Marnie Gaule, 18, was found guilty of two counts of battery for her role in the May 4 melee. In July, Grant Lustig, 18, pleaded guilty to unlawful possession of an alcoholic beverage by a minor.

More than a dozen youths were charged in the incident, which gained worldwide attention as videotapes of it were played on news programs. The tapes show junior girls from Glenbrook North High School (searchbeing covered with mud, paint, feces and garbage as onlookers, some hoisting beer cups, cheered.