Columbine High School massacre Columbine High School massacre The Columbine High School massacre was a school shooting that occurred on April 20, 1999, at Columbine High School in Columbine, an unincorporated area of Jefferson County (Jeffco), Colorado, United States, near Littleton in the Denver metropolitan area. The perpetrators, twelfth grade (senior) students Eric Harris and Dylan Klebold, murdered 12 students and one teacher. Ten students were murdered in the library, where the pair subsequently committed suicide. At the time, it was the deadliest school shooting ever. The crime has inspired several copycats, and "Columbine" has become a euphemism for a school shooting. They injured
Columbine High School first principal was Gerald Difford. There was no senior class during the school's first year; its first graduating class was in 1975. The school colors were selected through a vote by students at Ken Caryl Junior High School and Bear Creek High School, who were the first to attend Columbine High School when it opened in 1973. The school has undergone significant renovations since it first opened: in 1995, with the addition of a new cafeteria and library; in 1999-2000 (after the massacre), with interior renovations to the corridors, cafeteria, and former library; and in the early 2000s, with the