Generate a question about the following movie plot: Dewey Finn (Jack Black) is a depressed rock musician that was kicked out of his own band. Dewey is sharing an apartment with an old band member, Ned Schneebly (Mike White), who is now a substitute teacher. Dewey is 4 months behind in his share of the rent, and Ned is about to kick him out. Needing money and a job, Dewey answers a phone call for Ned, and then he pretends to be Ned Schneebly. Dewey accepts a job as a 5th grade substitute teacher at a snobbish private school. Dewey forms a rock band with the kids in his class in an effort to win the $10,000 prize money offered by a local band contest. He must do this in secret so that the school principal (Joan Cusack) and the kid's parents know nothing of his plan. If Dewey can win the battle of the bands competition, it will solve his financial problems, and put him back in rock. Douglas Young (the-movie-guy)
How many months is Dewey behind on the rent?