Calabasas High School students who rode to a dance this month on chartered buses stocked with alcoholic beverages will be barred from extracurricular activities for the rest of the year, officials said Tuesday.
The ban affects the student body president, lead actors in this spring's school play and athletes in five sports.
The sanctions were added to three-day suspensions ordered earlier by officials of the Las Virgenes Unified School District.
School officials said the punishment ends their investigation of the March 14 incident.
Los Angeles County sheriff's deputies who checked the buses with a high school vice principal allegedly found beer, wine, champagne and other alcoholic drinks.
Three 21-year-old chaperones were arrested after a fight with deputies.
Although the number of students aboard the buses was first put at 60 by school officials, an investigation showed that only 42 were involved, Las Virgenes Supt. Albert D. Marley said.