From Mrs. Krabappel on "The Simpsons" to Mr. Kotter from "Welcome Back Kotter," check out some of the most memorable TV teachers.
Mr. Kotter from "Welcome Back Kotter," played by Gabe Kaplan
Screen Gems Television
Library of Congress
Patrick Aventurier/Getty Images
Maddie Meyer/Getty Images
Sebastião Salgado via Wikimedia Commons
U.S. Marine Corps
CDC Public Health Image Library
Theo Wargo/Getty Images for Tony Awards Productions
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