10 People You May Not Have Known Were Teachers And Professors

You won't believe some of the famous people who have enriched young minds.

Mr. T, gym teacher in Chicago

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Before he pitied the fool, he pitied the students who couldn't do the climbing rope.

Roger Ebert, University of Chicago

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The late Ebert started out as a doctoral candidate at the University of Chicago before pursuing film criticism full time. However, he never actually left the school, serving as a lecturer for the Graham School of Continuing Liberal and Professional Studies. Wonder if he graded his papers based on the "thumbs up, thumbs down" scale?

Kal Penn, University of Pennsylvania

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Back in 2007, Kal Penn, also known as Kumar from "Harold & Kumar Go to White Castle," was a guest instructor at Penn.

Jon Hamm, John Burroughs School

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Before he was dishing out life lessons to colleagues as Don Draper on AMC's "Mad Men," Jon Hamm taught eighth-grade acting at his alma mater in Ladue, Mo.

Gene Simmons, Emily Dickinson School

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The KISS bass guitarist taught sixth grade back in the early 1970s.

Sylvia Plath, Smith College

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A few years after graduating summa cum laude from Smith, Plath returned as an instructor of English language and literature.

Sheryl Crow, Kellison Elementary School

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In the 1980s, every day was a winding road for Sheryl Crow, when she taught elementary music during the day in order to sing with rock bands on the weekends.

Stephen King, Hampden Academy

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Imagine the added horror of getting a bad grade when your teacher was Stephen King!

Andy Griffith, Goldsboro High School

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He taught English and apparently helped to create the high school's marching band.

Sylvester Stallone, American College of Switzerland

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Like Mr. T, Mr. Rocky Balboa also moonlighted as a gym teacher. After high school, he coached women's athletics.