Detention Night (2011)

Two years after a high-school prank that nearly killed popular teacher Mr. Balszack during the school's annual famine, the graduating class of Sloppy Secondary try to forget the incident and decide to hold a 24-hour famine in hopes of making it an annual event again. It isn't long before students and staff start turning up dead at the hands of a killer masquerading as the school's mascot. Is Balszack back for revenge?