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| Cleveland Elementary School, Stockton, California | January 17, 1989 | A man (age 24) set his car on fire in the parking lot of Cleveland Elementary School and then entered the school grounds and began shooting. He killed five students, and wounded 29 students and one teacher. He fired approximately 106 shots in 2 minutes and then shot himself in the head with a pistol. |
| Lindhurst High School, Olivehurst, California | May 1, 1992 | A former student (age 20) of Lindhurst High School held students and teachers hostage. He shot and killed three students and one teacher before surrendering to police. |
| Westside Middle School, Jonesboro, Arkansas | March 24, 1998 | Two boys (ages 11 and 13) gathered weapons in a van and then drove to Westside Middle School. Once at school, one boy entered the school and pulled a fire alarm and went outside to join other boy. As teachers and students evacuated the building, the boys opened fire, killing four students and one teacher and wounding 10 others. The boys then ran into the woods and were caught by police. |
| Thurston High School, Springfield, Oregon | May 20-21, 1998 | A teenage boy (age 15) began his killing spree at home killing his father and mother. The following morning he drove to his high school armed with multiple weapons. He entered the school and walked down a hallway shooting at students. He shot 27 students, killing two before being tackled by students when he tried to reload. |
| Columbine High School, Littleton, Colorado | April 20, 1999 | Two high school students (ages 17 and 18) entered Columbine High School and placed 2 propane bombs in the cafeteria and then waited in their cars for the bombs to detonate. When the bombs failed to detonate they approached the school armed with guns and a large amount of ammunition. They began shooting students outside the school and continued shooting inside and randomly throwing small improvised explosive devices. They killed 13 people and injured 23. The spree ended when the two committed suicide. |
| Red Lake Senior High School, Red Lake, Minnesota | March 21, 2005 | A 16-year-old high school student killed his grandfather (a tribal police officer) and companion in their home. He took his grandfather’s service pistol, police shotgun, and body armor and drove his police car to Red Lake High School. He shot and killed an unarmed security guard who tried to subdue him and then killed a teacher and five students, all within 3 minutes. After being wounded in an exchange of gunfire with tribal police, he killed himself at the school. |
| Amish Schoolhouse, Nickel Mines, Pennsylvania | October 2, 2006 | A milk truck driver (age 32) entered a one-room Amish school house armed with three guns. He sent the boys and adults outside and then opened fire on the girls, killing five and critically wounding five. He killed himself when police arrived at the school. |
| Heath High School, West Paducah, Kentucky | December 1, 2007 | A 14-year-old student at Heath High School fired on a school prayer group, killing three students. After firing several shots the shooter stopped, put the gun down, and surrendered to the principal. |
| Chardon High School, Chardon Ohio | February 27, 2012 | A 17-year-old boy entered the cafeteria of Chardon High School and opened fire, killing three students and wounding two others. The assailant was arrested outside the school. |
| Sandy Hook Elementary School, Newtown, Connecticut | December 14, 2012 | A man (age 20) shot and killed his mother in her home. He then then drove to Sandy Hook Elementary School where he forced his way into the school and opened fire. He killed a 26 people, including 20 students ages six and seven. He then killed himself as police closed in on him. |