Columbine High School shootings

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Columbine High School shootings: Facts & Related Content

Written and fact-checked by The Information Architects of Encyclopaedia Britannica

News •

Easter 2025 falls on April 20, a day fraught with tragedy • Apr. 19, 2025, 7:24 AM ET (USA Today)

Pennsylvania school shooting was planned for the Columbine anniversary • Apr. 14, 2025, 3:02 AM ET (CBS)

Pennsylvania man accused of planning high school shooting around this month’s Columbine anniversary • Apr. 13, 2025, 6:42 AM ET (CNN)

Facts

Date	April 20, 1999
Location	Colorado • United States • Littleton

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