SEASON: 25
EPISODE: 7 - Yellow Subterfuge
SYNOPSIS
Principal Skinner introduces a unique incentive to stop pupils being naughty - a ride on a submarine. It seems to do the trick, and before long Springfield Elementary's finest are competing to be the best behaved - including Bart. But has the youngster committed too many crimes against Skinner to wipe the slate clean? Meanwhile, Lisa helps Krusty with his money troubles.