Here is a list of incidents of random elementary, middle and high school (excludes colleges and universities) violence with fatalities, from 1927 to the present. This list does NOT include suicides, gang related incidents, or deaths resulting from interpersonal conflicts.
U.S. Timeline (selected only): December 14, 2012 - Sandy Hook Elementary School - Newtown, Connecticut. Adam Lanza, 20, guns down 20 children, ages 6 and 7, and six adults, school staff and faculty, before turning the gun on himself. Investigating police later find Nancy Lanza, Adam's mother, dead from a gunshot wound. The final count is 28 dead, including the shooter.
February 27, 2012 - A shooting occurs at Chardon High School in Ohio. Student Daniel Parmertor, 16, is killed and four others wounded when student T.J. Lane, 17, opens fire in the school. On February 28, Demetrius Hewlin, 16, dies from his wounds and Russell King Jr., 17, is declared brain dead. On March 1 Lane is charged with three counts of aggravated murder, two of attempted aggravated murder and one of felonious assault. - February 26, 2013 - Pleads guilty to three counts of attempted aggravated murder, two counts of attempted murder and a one count of felonious assault. As part of the plea, the death penalty is removed. - March 19, 2013 - Lane is sentenced to life in prison. He wore a white T-shirt with the word "killer" written on it to the sentencing hearing, and didn't allow his attorneys to present evidence on his behalf.
January 5, 2011 - Millard South High School, Omaha, Nebraska. 17-year-old Robert Butler Jr. opens fire on principal Curtis Case and vice principal Vicki Kasper. Butler then kills himself about a mile from the school. Vice principal Kasper later died at the hospital.
February 5, 2010 - Discovery Middle School, Madison, Alabama. 14-year-old Todd Brown dies after being shot in the head in a school hallway. A fellow ninth-grader is the suspected shooter and is taken into custody.
October 16, 2009 - Carolina Forest High School, Conway, South Carolina. A 16-year-old student is shot and killed by a police officer after allegedly pulling a knife and stabbing the officer.
September 23, 2009 - John Tyler High School, Tyler, Texas. A 16-year-old student is taken into custody for stabbing and killing high school teacher Todd R. Henry.
September 15, 2009 - Coral Gables Senior High School, Coral Gables, Florida. 17-year-old Andy Jesus Rodriguez fatally stabs 17-year-old sophomore Juan Carlos Rivera during a fight.
August 21, 2008 - Central High School, Knoxville, Tennessee. An unnamed teen shoots and kills another teen. The suspect is arrested by police.
January 3, 2007 - Henry Foss High School, Tacoma, Washington. Student Douglas Chanthabouly, 18, fatally shoots another student, Samnang Kok, 17. Chanthabouly has been taken into custody and charged with first-degree murder.
October 2, 2006 - Georgetown Amish School, Nickel Mines, Pennsylvania. 32-year-old Charles Roberts IV goes to a small Amish school and takes at least 11 girls hostage. Five girls were killed and six others wounded. Roberts then killed himself.
September 29, 2006 - Weston High School, Cazenovia, Wisconsin. 15-year-old Eric Hainstock goes to school armed with a shotgun and a handgun. After a struggle with the school janitor, Hainstock shoots and kills the school principal. He is convicted of murder in August 2007 and sentenced to life in prison.
September 27, 2006 - Platte Canyon High School, Bailey, Colorado. 54-year-old Duane Morrison takes six female students hostage. When SWAT teams enter the school, Morrison shoots 16-year-old Emily Keyes. Morrison then kills himself. Keyes later died at the hospital.
November 8, 2005 - Campbell County Comprehensive High School, Jacksboro, Tennessee. A 15-year-old student opens fire on a principal and two assistant principals, killing one of them and critically wounding another, authorities said.
March 21, 2005 - Red Lake High School, Red Lake, Minnesota. 16-year-old Jeff Weise kills his grandfather and another adult, four fellow students, a teacher and a security officer. He then killed himself.
February 3, 2004 - Southwood Middle School - Palmetto Bay, Florida. 14-year-old Michael Hernandez slashes the throat of 14-year-old Jaime Rodrigo Gough.
September 24, 2003 - Rocori High School - Cold Spring, Minnesota. 15-year-old Jason McLaughlin shoots and kills 17-year old Aaron Rollins and critically injures another student. The second student died in October. McLaughlin has been charged with second-degree murder.
April 24, 2003 - Red Lion Area Junior High School - Red Lion, Pennsylvania. 14-year-old James Sheets brings a revolver to school and kills his principal, Eugene Segro, and then himself.
December 5, 2001 - Springfield High School - Springfield, Massachusetts. At a high school for troubled teens, 17-year-old Corey Ramos stabs to death Reverend Theodore Brown, a counselor at the school. In 2003, Ramos is sentenced to life in prison.
March 5, 2001 - Santana High School - Santee, California. 15-year-old Charles "Andy" Williams kills two classmates, a 14-year-old and a 17-year-old, and injures 13. Williams is sentenced in 2002 to at least 50 years in prison.
May 26, 2000 - Lake Worth Community Middle School - Lake Worth, Florida. 13-year-old Nathaniel Brazill, after being sent home for misbehaving, returns to school and shoots and kills his teacher Barry Grunow. Brazill is sentenced to 28 years in prison.
February 29, 2000 - Buell Elementary School - Mount Morris Township, Michigan. An unnamed six-year-old boy shoots and kills a six-year-old playmate, Kayla Rolland, at school. He is removed from his mother's custody and put up for adoption.
November 19, 1999 - Deming Middle School - Deming, New Mexico. 12-year -old Victor Cordova shoots and kills a 13-year-old classmate. He is sentenced to two years in juvenile detention.
April 20, 1999 - Columbine High School - Littleton, Colorado. 18-year-old Eric Harris and 17-year-old Dylan Klebold kill 12 fellow students and one teacher before committing suicide in the school library.
May 21, 1998 - Thurston High School - Springfield, Oregon. After killing his parents the previous day, 15-year-old Kip Kinkel returns to Thurston High armed with a rifle. He kills two students in the school cafeteria, a 16 and a 17-year-old. He is sentenced to 112 years in prison.