/ Aug. 1, 1966: University of Texas-Austin – Until the massacre on Monday this was the worst shooting on a college campus in U.S. history. On this day Charles Whitman, 25, ascended to the top of the university’s 307-foot tower and opened fire. He killed 13 people from the tower and wounded 31 others before being shot to death by the Austin police. He killed his mother and wife the night before.
/ July 12, 1976: California State University-Fullerton – Edward Charles Allaway, a custodian at the university, walked into the campus’ library and shot nine people, killing seven.
/ Jan. 17, 1989: Cleveland Elementary School, Stockton, Calif. – Patrick Purdy, a mentally ill Stockton resident, opened fire on the school’s playground killing five children, wounding 29 others and a teacher, before killing himself.
/ Nov. 1, 1991: University of Iowa-Iowa City – Gang Lu, a graduate student angry he had not received an award, shot six people leaving five dead and the other person permanently paralyzed before killing himself.
/ Feb. 2, 1996: Frontier Junior High, Moses Lake, Wash. – Barry Loukaitis, a 14-year-old student at the school, walked into his algebra class and shot and killed three people – two students and his teacher.
/ Aug. 15, 1996: San Diego State – Frederick Martin Davidson, a 36-year-old graduate engineering student, pulled out a handgun and killed three professors while defending his thesis before a faculty committee.
/ Dec. 1, 1997: Heath High School, West Paducah, Ky. – Michael Carneal, a 14-year-old student at the school, shot eight students – killing three girls and wounding five others – just after the students had ended a prayer meeting in the school’s lobby.
/ March 24, 1998: Westside Middle School, Jonesboro, Ark. – Two boys, 13-year-old Mitchell Johnson and 11-year-old Andrew Golden, set off the fire alarm and killed four students and a teacher as they left the school.
/ April 20, 1999: Columbine High School, Littleton – Two students, 18-year-old Eric Harris and 17-year-old Dylan Klebold, opened fire throughout the high school killing 12 students and a teacher before both committing suicide. Twenty-three others were wounded.
/ Jan. 16, 2002: Appalachian School of Law, Grundy, Va. – Dismissed graduate student Peter Odighizuwa, 42, returned to the school’s campus killing the dean, a professor and a students, while wounding three others.
/ Oct. 28, 2002: University of Arizona-Tucson – Robert Flores, a 40-year-old Nursing College student and Gulf War veteran, killed three instructors before shooting himself.
/ March 21, 2005: Red Lake High School, Red Lake Indian Reservation, Minn. – Five students, a teacher and a security guard were gunned down by 16-year-old high school student Jeff Weise. He also killed his grandfather and his grandfather’s companion elsewhere on the Chippewa Indian reservation.
/ Sept. 2, 2006: Shepard University, Shepherdstown, W.Va. – Douglas Pennington, 49, killed his two sons and himself during a visit to the campus.
/ Sept. 27, 2006: Platte Canyon High School, Bailey – Duane Morrison took six female high school students hostage, molested them and then shot one to death and killed himself as police came into the school.
/ Oct. 2, 2006: West Nickel Mines Amish School, Lancaster County, Pa. – Charles Carl Roberts, a local milk truck driver, entered the school and shot 10 girls aged 6 to 14 – five of them died – before killing himself.
/ April 16, 2007: Virginia Tech, Blacksburg, Va. – A lone gunman kills 32 students and commits suicide – remember to update this close to press time.