Some other fatal school shootings:
— March 21, 2005: 16-year-old student Jeffrey Weise killed nine people, including his grandfather and his grandfather's companion at home, and then five fellow students, a teacher and a security guard at Red Lake High School in Red Lake, Minn., before killing himself. Seven students also were wounded.
— Sept. 24, 2003: John Jason McLaughlin awaits trial in the shooting deaths of Aaron Rollins, 17, and Seth Bartell, 14, who were fellow students at Rocori High School in Cold Spring, Minn. McLaughlin was 15 at the time of the shooting.
— March 5, 2001: Charles "Andy" Williams, 15, killed two fellow students and wounded 13 others at Santana High School in Santee, Calif. Williams was sentenced to 50-years-to-life in prison.
— May 26, 2000: 13-year-old honor student Nathaniel Brazill killed his English teacher, Barry Grunow, on the last day of classes in Lake Worth, Fla. He was convicted of second-degree murder and is serving a 28-year sentence.
— Feb. 29, 2000: A 6-year-old boy shot and killed a 6-year-old classmate at Buell Elementary School in Mount Morris Township, Mich. Because of his age, the boy was not charged.
— Nov. 19, 1999: A 13-year-old girl was shot in the head in school in Deming, N.M., and died the next day. A 12-year-old boy pleaded guilty and was sentenced to at least two years in juvenile prison.
— Apr. 20, 1999: Students Eric Harris, 18, and Dylan Klebold, 17, killed 12 students and a teacher and wounded 23 before killing themselves at Columbine High School in Littleton, Colo.
— May 21, 1998: Two teenagers were killed and more than 20 people hurt when a boy opened fire at a high school in Springfield, Ore., after killing his parents. Kip Kinkel, 17, was sentenced to nearly 112 years in prison.
— May 19, 1998: Three days before his graduation, Jacob Davis, an 18-year-old honor student, opened fire at a high school in Fayetteville, Tenn., killing a classmate who was dating his ex-girlfriend. Davis was sentenced to life in prison.
— April 24, 1998: Andrew Wurst, 15, opened fire at an eighth-grade dance in Edinboro, Penn., killing a science teacher. The boy pleaded guilty to third-degree murder and other charges and is serving 30 to 60 years in prison.
— March 24, 1998: Two boys, 11 and 13, fired on their Jonesboro, Ark., middle school from nearby woods, killing four girls and a teacher and wounding 10 others. Both boys were convicted of murder and can be held until age 21.
— Dec. 1, 1997: Three students were killed and five wounded at Heath High School in West Paducah, Ky. Michael Carneal, 14-year-old, pleaded guilty but mentally ill to murder and is serving life in prison.
— Oct. 1, 1997: Sixteen-year-old Luke Woodham of Pearl, Mississippi, fatally shot two students to death and wounded seven others after stabbing his mother to death. He was sentenced the following year to three life sentences plus 140 years.
— Feb. 19, 1997: A 16-year-old boy took a shotgun and a bag of shells to school in Bethel, Alaska, and killed the principal and a student and wounded two others. Evan Ramsey is serving a 210-year sentence.