Classes will resume today at a high school in Minnesota after police used mace to break up an all out brawl.
Officers say it started as a food fight inside the school cafeteria involving hundreds of students.
Students described the scene as a riot. School resource officers and more than 20 staff members tried to stop the violence.
Police responded and say students even pelted them with items. That's when two officers shot mace into the air bringing the melee to an end.
Some parents were alerted by text message of the danger unfolding.
Medics rushed five people, including three students and two staff members to the hospital for treatment. 15 others were treated at the scene.
School officials say they will implement a safety plan today to make sure there's no repeat of the violence.