Deadly school shootings in U.S. history

Published On: Apr 02 2012 04:44:44 PM CDT   Updated On: Dec 12 2014 03:44:56 PM CST

Friday's shooting at an Oregon high school injured at least three students. Look back at major school shootings in U.S. history.

Virginia Tech shooting
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Rick Wilking / Reuters

April 19, 2007: Thirty-three people were killed in two separate shooting incidents at Virginia Tech University in Blacksburg, Va. The gunman killed himself after the second shooting, police said.

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