The Columbine High School massacre was a school shooting which occurred on April 20, 1999. Two senior students, Eric Harris and Dylan Klebold, murdered a total of 12 students and one teacher. They injured 21 additional students, with three other people being injured while attempting to escape the school. The pair then committed suicide. http://en.wikipedia.org/wiki/Columbine_High_School_massacre
April 20, 1999, the Columbine High School Massacre. Two teens went on a shooting spree at Columbine High School in Littleton, Colorado, killing 13 people and wounding more than 20 others before turning their guns on themselves and committing suicide. This was the worst high school shooting in U.S. history.