The term school massacre refers to an incident of mass murder occurring at a school, normally perpetrated by students, although also in some cases by outsiders. School massacres in recent history have included:
May 1, 1992, Olivehurst, California: a 20-year old gunman killed four people and wounded 10.
January 18, 1993, Grayson, Kentucky: a 17-year old shot his English teacher in the head and a school janitor in the abdomen.
February 2, 1996, Moses Lake, Washington: A 14-year-old student turned a hunting rifle on his algebra class at Frontier Junior High School, killing two classmates and a teacher.
February 19, 1997, Bethel, Alaska: a 16-year-old student opened fire with a shotgun, killing the school principal and one student, and wounding two others.
October 1, 1997, Pearl, Mississippi: a 16-year old boy stabbed his mother, then took a rifle to school where he opened fire, shooting nine students. His ex-girlfriend and another student died. Six other boys were later accused of conspiracy.
December 1, 1997, West Paducah, Kentucky[?]: a 14-year old boy carried five fully-loaded guns to school, shot at a group, killing three and wounding another six teenagers.
March 24, 1998, Jonesboro, Arkansas: 11 and 13-year old cousins ambushed classmates during a false fire alarm. Four girls and a teacher were killed and 11 people were wounded.
April 24, 1998, Edinboro, Pennsylvania: a 14-year old went to the school graduation dance where he shot and killed a popular science teacher.
May 19, 1998, Fayetville, Tennessee[?]: three days before graduation, an 18-year old honor student allegedly shot and killed a classmate who was dating his ex-girlfriend.
May 21, 1998, Springfield, Oregon: two boys were killed and more than 20 other students were injured when a 15-year old allegedly opened fire in the school cafeteria. Two bodies, believed to be the youth's parents, were later discovered at the boy's home.