Deadly school shootings in U.S. history

Published On: Apr 02 2012 04:44:44 PM CDT   Updated On: Nov 27 2014 11:21:46 AM CST

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

Carneal, school shooting
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Dec. 1, 1997: Three students were killed and five wounded at West Paducah High School in West Paducah, Ky. Michael Carneal, then 14, later pleaded guilty but mentally ill to murder and is serving life in prison.

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