Episode [=8F15=]\\
First Aired 2/27/92

When the results of Bart's vocational survey suggest he'd make a great cop and Lisa learns her dreams of becoming a professional sax player are doomed by genetics (she has stubby fingers, which would make saxophone playing impossible), their roles at Springfield Elementary are reversed.

!!This episode contains examples of:

* BreakTheCutie: Learning that the only thing she is worthy of is being a housewife and being rejected from becoming a professional saxophone player due to her stubby fingers broke Lisa down to the point of becoming a rebellious student.
-->'''Lisa:''' Dear log: This will be my last entry, for you were a journal of my hopes and dreams. [[{{DespairEventHorizon}} And now, I have none]].
* EvenEvilHasStandards: When Lisa points out that Bart used to appreciate the value of a prank, Bart responds, "Yeah, but even I had my limits."
** Even Lisa realized she's gone to far, but done it anyway, and cries.
* FunWithAcronyms: The Career Aptitude Normalizing Test (CANT)
* InformedFlaw: Lisa's stubby fingers will supposedly prevent her from being a professional saxophone player, but she's never expressed any difficulty with her fingering before or since.
* IneptAptitudeTest: According to the CANT, Bart is best suited to be a policeman, while Lisa will be a homemaker. The machine that analyzes the tests is seen malfunctioning when it gets to the Simpsons.
* TheLancer: Bart becomes one to Principal Skinner.
* PersonalitySwap: After the test results, Bart becomes hall monitor while Lisa fills the role of rebellious prankster vacated by Bart.
* ShoutOut: When Skinner asks Lisa what she's rebelling against, she says "Whadda you got?", the same response as Creator/MarlonBrando's character in ''Film/TheWildOne''.
* SpecialGuest: SteveAllen as [[ImagineSpot Bart's altered voice]].
* YellowSashOfPower. As hall monitor, Bart rules with ruthless efficiency.