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.

University of Iowa
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Nov. 1, 1991: Gang Lu, 28, a graduate student in physics from China, opened fire in two buildings on the University of Iowa campus. Five university employees were killed and two other people were wounded. The student fatally shot himself.

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