High Quality Content by WIKIPEDIA articles! "Separate Vocations" is the eighteenth episode of The Simpsons` third season. It originally aired on Fox in the United States on February 27, 1992. In the episode, the Springfield Elementary School makes the students take career aptitude tests. When Lisa discovers that she is best suited to become a homemaker, her dreams of becoming a professional musician are shattered and, as a result, she becomes a troublemaker in school. Meanwhile, Bart discovers that he is best suited to become a policeman; this significantly improves his grades and behavior and he is chosen to be the school`s new hall monitor.