Deadly school shootings in U.S. history

Published On: Apr 02 2012 04:44:44 PM CDT   Updated On: Jun 10 2014 11:18:04 AM CDT

With Tuesday's school shooting in Oregon, look back at other major school shootings in U.S. history.

Columbine High School
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Reuters Photographer / Reuters

April 20, 1999: Students Eric Harris, 18, and Dylan Klebold, 17, killed 12 students and a teacher and wounded 23 before killing themselves at Columbine High School in Littleton, Colo.

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