Lisa seeks to end a local holiday in which snakes are chased into town and beaten with sticks. Bart is expelled from school by Principal Skinner.
Principal Skinner prepares the school for Superintendent Chalmers’ surprise inspection by luring Bart, Jimbo and Nelson into the Civil Defense Bunker and locking them inside. But Bart escapes and takes Groundskeeper Willie’s tractor on a wild ride through the school grounds, eventually mowing into Chalmers’ backside. As punishment, Skinner expels Bart from Springfield Elementary.
Homer enrolls Bart in a parochial school, but his son is thrown out. Faced with no other choice, Marge decides to teach Bart herself, turning the garage into a makeshift classroom. Bart becomes excited about reading “Johnny Tremaine” after Marge piques his interest by describing the violence in the story. Sensing that her son has developed an interest in colonialism, and encouaged by his new enthusiasm for reading books, Marge takes Bart on an historic trip through Springfield.
Lisa, meanwhile, is horrified at the return of “Whacking Day,” a local holiday in which all of Springfield turns out to chase snakes into the center of town and beat them to death with sticks. To Lisa’s surprise, Bart reads in one of his books that snakes “hear” by sensing vibrations in the ground. With the help of singer Barry White, who appears in town to help launch the festivities, all of the snakes are lured into the Simpsons’ house. Bart and Lisa convince the unruly mob of snake killers that the holiday is a sham. The snakes are released and returned to the wild. To reward Bart for his studies, Skinner accepts him back as a student.
Source: 20th Century Fox