Separate Vocations

"Separate Vocations" is the eighteenth episode of Season 3. It first aired on February 27, 1992. The episode was written by George Meyer and directed by Jeffrey Lynch. Steve Allen guest stars.

Synopsis
After taking the Career Aptitude Normalization Test, or CANT test, Lisa finds out she's more suited to be a homemaker, while Bart is more suited to be a police officer. While Bart enjoys his taste of authority, Lisa turns into a bad kid.

Plot
After taking career aptitude tests, scored by a malfunctioning computer, Lisa discovers that the occupation she is best suited for is homemaker, while Bart 's test show that he should be a policeman. Lisa is heartbroken over the result and is determined to prove the test wrong. She consults a music teacher for his opinion, but he tells her that, having inherited her father's large fingers, she can never be a professional saxophone player. Lisa is therefore required by the test to spend the day doing chores with her mother Marge, while Bart goes on a ride-along with the police.

Lisa hates her role as a homemaker, and realizing that her future dreams have been shattered, she loses interest in being a good student. Marge tries to comfort her by telling her that being a homemaker isn't so bad. However, Lisa isn't impressed with her story and quits playing saxaphone. Bart enjoys spending time with the police, and he even ends up stopping Snake Jailbird  during a car chase. When Principal Skinner  discovers Bart's new interest in law enforcement, he enlists him as a hall monitor. He soon becomes a good student with good grades, whereas Lisa adopts a sulky, rebellious attitude. She hangs out with rebellious girls in the bad girl's bathroom, makes snippy comments to Miss Hoover by telling her to shove it, gets sent to Skinner's office for disciplinary actions and her grades drop as a result. Bart starts handing out demerits to his classmates for minor infractions and has order restored to the school. While serving detention for another nasty comment, Lisa secretly steals all of the Teachers' Editions of the schoolbooks and reveals the teachers' lack of education. It's up to Bart to figure out who stole the books. Realizing his sister is the culprit, Bart takes the blame and returns to his life as a bad student and detention regular, while Lisa goes back to being a good student. As Bart spents his time in detention, Lisa plays her saxophone outside his classroom to comfort him.

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