Detention (2012)

Josh Hutcherson, Dane Cook and Spencer Locke star in Detention, a hipster, teen horror-comedy where the local students of Grizzly Lake must survive their final year of high school. Standing in their way is Cinderhella, a slasher-movie killer who has seemingly come to life and is preying on the schools student body. As the clock ticks and the bodies pile up, the likely suspects are embroiled in a race against time to stop Cinderhella and ultimately save the world if only they can get out of detention.