Judge Timothy Chambers also set a July 15 status hearing in the case.
Fifteen teens charged with misdemeanor battery appeared in Chambers' suburban Chicago courtroom today. Another teen and two parents accused of providing the alcohol that fueled the incident also were in court.
Several of the teens asked to leave the state for family gatherings or college visits. Chambers gave them permission to go, as long as they're back in Illinois for the status hearing.
The May 25 incident in the Chicago suburb of Northbrook gained nationwide attention due to videotapes that show senior girls slugging junior girls and showering them with mud, garbage, paint and feces.