The Simpsons: Season 15, Episode 13

Smart & Smarter (22 Feb. 2004)

TV Episode  |  TV-PG  |   |  Animation, Comedy
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When Maggie is revealed to have an IQ of 167, Lisa is no longer the genius of the family, causing a rivalry between the sisters.



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Episode cast overview:
Marge Simpson (voice)
Lisa Simpson (voice)
Dr. Hibbert / Principal Skinner / 'Bark' Narrator (voice)
Henry (voice)
Philippa (voice)
Karl Wiedergott ...
Additional Voices (voice)


After a quarrel with Dr. Hibbert, Homer decides to enlist Maggie for a pre-nursery school. Maggie doesn't get tested because she can't talk. Back home Lisa discovers Maggie can make words and the family goes back to the pre-nursery school. This time Maggie passes the test gloriously and turns out to have an IQ of 167. This is more than Lisa's IQ (159) which makes her unsure about her identity. Written by Marco van Hoof <>

Plot Summary | Add Synopsis

Plot Keywords:

2d animation | child prodigy | See All (2) »


Animation | Comedy


TV-PG | See all certifications »




Release Date:

22 February 2004 (USA)  »

Company Credits

Show detailed on  »

Technical Specs


Sound Mix:


Aspect Ratio:

1.33 : 1
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Did You Know?


The tongue in the giant model digestive system is divided into different areas for different tastes. This is inaccurate; the various taste receptors are spread all over the tongue. See more »


Henry: Meet Maggie Simpson; IQ 165
Mrs Wickerbottom: 165? That's amazing for a Christian!
See more »

Crazy Credits

Simon Cowell comments and criticizes on the credits. See more »


Spoofs What Ever Happened to Baby Jane? (1962) See more »


Moon River
by Henry Mancini and Johnny Mercer
See more »

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