This is a chronological list of school shootings in the United States.
Prior to 1989, there were only a handful of incidents in which two or more victims were killed by firearms at a school, including the 1966 University of Texas massacre, the 1974 Olean High School shooting, the 1976 California State University, Fullerton massacre, and the 1979 Cleveland Elementary School shooting (the 1927 Bath School disaster was a bombing, not a shooting, with a firearm used only to detonate explosives). School shootings prior to the late 1990s, when they received intensive press and official coverage, were considered local incidents and may be substantially underreported in current tabulations, raising questions as to whether school shootings are actually increasing or are simply receiving more attention in recent years. From 1989 to 2012, there have been at least 40 such incidents.
The earliest known United States shooting to happen on school property was the Pontiac's Rebellion school massacre on July 26, 1764, where four Lenape American Indians entered the schoolhouse near present-day Greencastle, Pennsylvania, shot and killed schoolmaster Enoch Brown, and killed nine or ten children (reports vary). Only three children survived.