The Big Bang Theory star is a real-life nerd. Turning down Harvard and Yale, Bialik received a B.S. in neuroscience, Hebrew studies and Jewish studies in 2000 and her PhD in 2007. Her dissertation was titled "Hypothalamic Regulation in Relation to Maladaptive, Obsessive-Compulsive, Affiliative, and Satiety Behaviors in Prader-Willi Syndrome."

There was a time when Franco attended just one school. After dropping out following his freshman year in 1997 to concentrate on acting, Franco re-enrolled in 2006, receiving special permission to take up to 62 (!) credits a quarter instead of the normal 19. He completed his English degree in 2008 with a 3.5 GPA.

The 2 Broke Girls star earned a degree in critical studies in 2008.

A double major in film and sociology, the House alum graduated in 2000.

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With NBA aspirations, Bridges played for John Wooden for one year before transferring to the University of Hawaii.

The Wonder math whiz graduated summa cum laude in 1998 with a B.S. in math. McKellar co-authored a scientific paper while at UCLA and has a theorem named after her: the Chayes–McKellar–Winn theorem.

Stiller dropped out after nine months and headed for Broadway, where he made his acting debut in the Tony-winning revival of The House of Blue Leaves.

Bell, who had wanted to become a doctor, majored in biology, but left to model in Japan.

The Dancing with the Stars judge graduated in 2000 with a degree in not dance, but world arts and cultures.

The Parenthood star received an anthropology degree in 2000.

The Step By Step star received a B.A. in communications in 2003.

Black was a member of Tim Robbins' acting troupe at UCLA, but dropped out after his sophomore year to focus on acting.

The Flash star earned an English degree in 2007. She also holds an associate's degree from Glendale Community College.

The Star Trek alum obtained his bachelor's and master's degrees in theater in 1960 and 1964, respectively.

After studying at the University of Nebraska and Cuesta College, Union graduated from UCLA with a sociology degree in 1991.

The Heroes star studied theater at UCLA before receiving a scholarship to a music school in San Francisco, Calif.

A high school graduate at 13, Panabaker followed her sister Danielle to UCLA, being accepted as a junior at age 15. The No Ordinary Family star graduated in 2008 with a B.A. in history before she turned 18. Like her sister, she has an associate's degree from Glendale Community College.

The Covert Affairs star obtained a B.A. in theater, film and television in 1996. He met his wife and Popular co-star Anel Lopez Gorham at UCLA. She graduated in 1998 with a theater, film and television degree.

Did he do that? Yup, the erstwhile Urkel graduated in 2001 with a film and television degree.

The SNL star graduated in 2003 with a theater degree and was part of the UCLA Spring Sing Company.

Reiner dropped out of UCLA's film school after two and a half years.

The SNL star dropped his musical theater studies after one year in 2000 to pursue acting.

The Law & Order: SVU star attended UCLA's School of Theater Film and Television, where her mother Jayne Mansfield also studied, but dropped out to pursue acting.

Rudy didn't go to Notre Dame, but UCLA. Astin graduated in 1997 with a B.A. in history and English.

The SNL alum obtained a history degree in 1993. While at UCLA, Forte was a member of the Lambda Chi Alpha frat.

The Oscar winner earned a B.A. in drama in 1981 after transferring from SUNY Plattsburgh.

A psychology major, Locklear dropped out to focus on acting. She had already begun modeling while at UCLA.

Planning to study journalism, Burnett ended up studying theater arts and English with plans to become a playwright. After performing in several productions, she dropped out in 1954 to pursue acting.