26 year old opened fire on a playground at an elementary school, killing five and wounding 26 kids and a teacher. He then committed suicide.
University of Iowa
November 1, 1991
5 killed and one seriously wounded by graduate Gang Lu, he then killed himself
Thurston High School
May 21, 1998
15 year old killed his parents and two kids at school- sentenced to life in prision
Columbine High School
April 20, 1999
18yr old and 17yr old killed 12 students and a teacher and wounded 23 before killing themselves.
Santana High School
March 5, 2001
15 year old student killed two fellow students and wounded 13 others, fired from a bathroom.
Rocori High School
September 24, 2003
15 year old killed two of his classmates, Minnesota, psychiatrist testified the shooter was suffering from schizophrenia and heard a voice that urged him to kill one of the boys who was said to be a bully. Life in prison
Red Lake High School
March 21, 2005
16 year old kills his grandfather, four students, a teacher and a security guard. Then himself
Orange High School
August 8, 2006
N.C., a 19 year old opened fire outside his former high school, said to be obsessed with school massacres- sent and email to the principle of a different school warning of his attack.
West Nickel Mines School
October 2, 2006
32 year old man goes into an Amish school and takes 11 girls as hostage- 5 killed 6 wounded, Man killed himself
The deadliest shooting by a single gunman in the history of the U.S. 32 people killed. Killed himself.