"Separate Vocations" is the Eighteenth episode of the third season of the American animated television series The Simpsons. It originally aired on the Fox network in the United States on February 27, 1992. In the episode, Springfield Elementary School students take career aptitude tests. When Lisa learns she is best suited to be a homemaker, her dreams of being a professional musician are shattered and she becomes a delinquent troublemaker at school. When Bart finds he would make a good policeman, his grades and behavior improve and Principal Skinner makes him hall monitor. The episode was written by George Meyer and directed by Jeffrey Lynch. American actor and television personality Steve Allen guest starred in the episode as the electronically altered voice of Bart in a fantasy sequence. Since airing, the episode has received mostly positive reviews from television critics. It acquired a Nielsen Rating of 14.8 and was the highest-rated show on Fox the week it aired. Plot After a malfunctioning computer scrambles the results of career aptitude tests, Lisa learns she is best suited to be a homemaker. Heartbroken, she tries to prove the test results are wrong and consults a music teacher. He tells her she has inherited her father's stubby fingers and can never be a professional saxophone player. Lisa dreads spending the day doing household chores with her mother. Realizing her dreams are shattered, she also loses interest in being a good student and rebels. When Bart's test shows he would make an ideal cop, he goes for a police ride-along with Eddie and Lou and helps apprehend Snake during a car chase. When Principal Skinner discovers Bart's new interest in law enforcement, he makes him hall monitor. Bart issues demerits to students for minor infractions and restores order to the school. Lisa encounters two delinquent students smoking in the bathroom and suggests they TP Skinner's beloved school mascot, a puma. When Lisa steals all the teachers' editions of textbooks and reveals their lack of smarts, Bart finds his sister is the culprit. Bart takes the blame for her, returning to his life as a bad student and detention regular. Lisa is reformed as a good student. While Bart is in detention, Lisa consoles him by playing her saxophone outside the classroom. Production The episode was written by George Meyer and directed by Jeffrey Lynch. Mike Reiss, show runner of The Simpsons with Al Jean