“Welcome to the school of hard knocks”–A group of teachers and students are locked inside a school after hours as a gang of hooded killers intent on murder set out on a blood-soaked rampage. Chased through the dark corridors and classrooms, the ensnared group must outfight and outwit their brutal attackers in an escape bid that will push them to the very limits of survival. Package Dimensions : 6.61 x 5.35 x 0.63 inches; 2.88 ounces Item model number : 5055201812568 Media Format : Blu-ray, DVD Run time : 1 hour and 19 minutes Release date : January 10, 2011 Studio : Optimum Home Entertainment ASIN : B004EMRZQ2 Number of discs : 1
