Before Matt Damon starred in "Good Will Hunting," he really hit the books at Harvard.
And before James Franco turned on his wild side in "Freaks and Geeks," the math wiz interned at Lockheed Martin.
We rounded up 30 celebrities who are high school valedictorians, Ivy Leaguers, MENSA members, and certified geniuses in their own rights.
These stories of actors, musicians, and TV personalities' brilliance may surprise you.
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Allison Williams is more than the smart one on "Girls."
Growing up under Brian Williams' roof, the "Girls" actress wasn't allowed to act professionally until she graduated from college. She studied English and archaeology at Yale — taking the kind of classes that make you feel like "lying on the ground thinking about things," she says.
When she didn't get a part in Yale's big musical as a freshman, she joined the improv group instead and found she had dad's comedy genes.
Ashton Kutcher hoped to attend MIT or Purdue to study engineering.
But the former "Punk'd" host lost his scholarships when he broke into his high school as a prank. He ended up at the University of Iowa, but dropped out at age 19 to pursue modeling. Kutcher now divides his time between acting and smart investing — in companies like Airbnb, Spotify, and Foursquare.
"The sexiest thing in the entire world is being really smart," Kutcher said at last year's Teen Choice Awards.
Cindy Crawford studied chemical engineering on scholarship at Northwestern University.
Cindy Crawford, who graduated as the valedictorian of her high school class, signed her first modeling contract in 1984. Initially she used the money to supplement her scholarship to attend Northwestern University, but she ditched school to launch her career.
By 1985, she appeared in the pages of Vogue, and would go on to become one of the original Big Six supermodels.
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