Kate Beckinsale. Michael Buckner / Getty Images Before Matt Damon starred in "Good Will Hunting," he really hit the books at Harvard University.

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.