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Interactive Timeline: School Shootings Take Toll

The past 15 years have witnessed a spate of rampage-style attacks by student gunmen in schools around the country.

The past 15 years have witnessed a spate of rampage-style attacks by student gunmen in schools around the country.

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SOURCES: Associated Press and Virginia Polytechnic Institute and State University
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A version of this article appeared in the April 08, 2009 edition of °ÄÃÅÅܹ·ÂÛ̳ as School Shootings Take Toll