An aspiring writer returns to his home town to finish his first novel. He takes a job as a substitute teacher only to be thrown into a nightmare on his very first day as a tainted chicken nugget infects one of his students with a zombie like rage disease. She bites a nasty boy who is picking on her who in turn bites another and so on, and so on. At recess it becomes a free for all as they take down and devour some teachers. A group of teachers and a ninja janitor are trapped inside the school helpless as they watch the kids take down a cop and the parents coming to pick them up. They need to configure weapons from whatever is in the teachers lounge and fight their way out.
This is comedy horror done right but not so surprisingly with such a great cast line up, Elijah Wood, Rainn Wilson (The Office), Jack McBrayer (30 Rock), Alison Pill (Scott Pilgrim vs The World) and Jorge Garcia (Lost). The jokes are intelligent, the puns are witty and the kids are ferocious. There is gore but it is offset by the humor so I would absolutely call this a fun and biddy friendly flick. Highly recommended.