School tests security plan after student brings gun on campus

For school districts, the safety playbook for incidents involving weapons always evolves. Typically, administrators and staff are focused on learning the best practices, but sometimes, as Peoria's Centennial High School demonstrated this week, they must execute them. On Monday, a student brought a handgun on campus. Police say there is no indication he intended to use it. He told school administrators he was carrying the weapon in his backpack after being confronted for smoking marijuana in the bathroom.