May 6, 1940: South Pasadena, California. After being removed as principal of South Pasadena Junior High School, Verlin Spencer shot six school officials, killing five, before attempting to commit suicide by shooting himself in the stomach.
May 4, 1956: in Prince George's County, Maryland, 15-year-old student Billy Prevatte fatally shot one teacher and injured two others at Maryland Park Junior High School in Prince George's County after he had been reprimanded from the school.
February 2, 1960: Hartford City, Indiana Principal Leonard Redden shot and killed two teachers with a shotgun at William Reed Elementary School in Hartford City, Indiana, before fleeing into a remote forest, where he committed suicide.
October 17, 1961: Denver, Colorado Tennyson Beard, 14, got into an argument with William Hachmeister, 15, at Morey Junior High School. During the argument Beard pulled out a .38 caliber revolver and shot at Hachmeister, wounding him. A stray bullet also struck Deborah Faith Humphrey, 14, who died from her gunshot wound.
November 12, 1966: Mesa, Arizona Bob Smith, 18, took seven people hostage at Rose-Mar College of Beauty, a school for training beauticians. Smith ordered the hostages to lie down on the floor in a circle. He then proceeded to shoot them in the head with a 22-caliber pistol. Four women and a three-year-old girl died, one woman and a baby were injured but survived. Police arrested Smith after the massacre. Smith had reportedly admired Richard Speck and Charles Whitman.
May 22, 1968: Miami, Florida Ernest Lee Grissom, a 15-year-old student at Drew Junior High School, shot and seriously wounded a teacher and a 13-year-old student after he had been reprimanded for causing a disturbance.
December 30, 1974: Olean, New York, Anthony Barbaro, a 17-year-old Regents scholar armed with a rifle and shotgun, kills three adults and wounds 11 others at his high school, which was closed for the Christmas holiday. Barbaro was reportedly a loner who kept a diary describing several "battle plans" for his attack on the school.
June 12, 1976: California State University, Fullerton massacre, where the school's custodian opened fire with a semi-automatic rifle in the library on the California State University, Fullerton campus killing 7, and wounding 2.
February 22, 1978: Lansing, Michigan After being taunted for his beliefs, a 15-year-old self-proclaimed Nazi, kills one student and wounds a second with a Luger pistol
January 29, 1979: Grover Cleveland Elementary School Shootings, California, where a 16yr old girl opened fire with the rifle, a gift from her father, killing 2 and wounding 9.
January 20, 1983: St. Louis County, Missouri the Parkway South Middle School, eighth grader brought a blue duffel bag containing two pistols, and a murder/suicide note that outlined his intention to kill the next person heard speaking ill of his older brother Ken. He entered a study hall classroom and opened fire, hitting two fellow students. The first victim, was fatally shot in the stomach, and the second victim received a non-fatal gunshot wound to the abdomen. Then he said, "no one will ever call my brother a pussy again" then committed suicide.
October 18, 1985: Detroit, Michigan During halftime of the homecoming football game between Northwestern High School and Murray-Wright High School. A boy who was in a fight earlier that day, pulled out a shotgun and opened fire injuring six students.
November 26, 1985: Spanaway, Washington A 14yr old girl shot two boys dead then kills herself with a .22-caliber rifle at the Spanaway Junior High School
May 16, 1986: The Cokeville Elementary School hostage crisis In a ransom scheme, David and Doris Young, both in their forties, took 150 students and teachers hostage on this spring day. Their demand for $300 million dollars came to an abrupt end when Doris accidentally set off a bomb, killing herself and injuring 78 students and teachers. David wounded John Miller, a teacher who was trying to flee, then killed himself.
May 20, 1988: Winnetka, Illinois 30yr old Laurie Dann shot and killed one boy, and wounded five other kids, in an elementary school, then took a family hostage and shot a man before killing herself.
September 26, 1988: Greenwood, South Carolina In the cafeteria of the Oakland Elementary School 19 year-old James William Wilson Jr., shot and killed Shequilla Bradley, 8 and wounded eight other children with a 9-round .22 caliber pistol. He went into the girls restroom to reload where he was attacked by Kat Finkbeiner, a Physical Education teacher. James shot her in the hand and mouth. He then entered 3rd grade classroom and wounded six more students.
December 16, 1988: Virginia Beach, Virginia Nicholas Elliott, 15, opened fire with a SWD Cobray M-11 semiautomatic pistol on his teachers at the Atlantic Shores Christian School. His first shots struck teacher Karen Farley in the arm; when she went down he killed her at point blank range. Nicholas then injured Sam Marino. He turned the Cobray toward his classmates, but the gun jammed and he was quickly subdued by M. Hutchinson Matteson, a teacher, before he could fire another round.
January 17, 1989: Cleveland School massacre of Stockton, California where 5 school children were killed and 29 wounded by a single gunman firing over 100 rounds into a schoolyard from an AK-47[
May 1, 1992: Olivehurst, California Eric Houston, 20, killed four people and wounded 10 in an armed siege at his former high school. Prosecutors said the attack was in retribution for a failing grade.
October 12, 1995: Blackville, South Carolina A suspended student shot two math teachers with a .32 caliber revolver.
February 2, 1996: Moses Lake, Washington Two students and one teacher killed, one other wounded when 14-year-old Barry Loukaitis opened fire on his algebra class.
February 19, 1997: Bethel, Alaska Principal and one student killed, two others wounded by Evan Ramsey, 16.
October 1, 1997: Pearl, Mississippi Two students killed and seven wounded by Luke Woodham, 16, who was also accused of killing his mother. He and his friends were said to be outcasts who worshiped Satan
December 1, 1997: West Paducah, Kentucky Three students killed, five wounded by Michael Carneal, 14, as they participated in a prayer circle at Heath High School