Oakland is reeling after a gun rampage at a small religious college left seven people dead. Six months ago, eight people died in a shooting in Seal Beach, California. And just over a year ago, an attack targeting Rep. Gabrielle Giffords in Arizona left six dead and 13 injured.
On April 16, 2007, Cho Seung-Hui went on a deadly shooting spree killing 32 people on the campus of Virginia Tech.
A judge has sided with Virginia Tech and overturned a $55,000 fine, ruling that the school did not violate a law requiring it to notify students in a "timely manner" about threats during a 2007 campus rampage.
Finnish authorities arrested a man Friday after he fired six shots through a school classroom door and shot an office worker in the hand in two separate incidents, police said.
A man who survived the April 2007 massacre at Virginia Tech says not enough is being done to keep guns out of the hands of people like the shooter even as a jury found the university failed to warn students earlier that a gunman was on campus.
T.J. Lane is charged with three counts of aggravated murder and other charges in connection to the school shootings.
Family and friends of 16-year-old Demetrius C. Hewlin, one of three students killed in an Ohio school shooting, were preparing Monday to say their final goodbyes.
Family and friends of 16-year-old Daniel Parmertor, one of three students killed in an Ohio school shooting, said their final goodbyes Saturday as he was laid to rest.
For students, parents and teachers in Chardon, Ohio, the week has been a disorienting one after a high school shooting left three teenagers dead.
Brian Ries, social media editor for Newsweek/Daily Beast, on how students used Twitter during the Chardon school shooting.
CNN's Ted Rowlands details the weapon used in Monday's shooting at Chardon High School.
Two students were in custody Tuesday in connection with a shooting outside a North Carolina high school in which another student was injured, police said.
Norwegian massacre suspect Anders Behring Breivik's purported 1,500-page manifesto paints a picture of a deliberative, driven killer -- not a rambling crazy person, criminologists said Tuesday.
A pair of homemade videos of the gunman who killed 12 students at a Rio de Janeiro school last week reveals an outcast whose rampage may have been triggered by bullying.
Police arrest a suspect after a college shooting leaves one dead and three others injured.
One person was killed and three others, including a woman in her 90s and a 4-year-old child, were injured Wednesday in a shooting on the campus of Southern Union Community College in Opelika, Alabama, police said.
Police arrest a custodial employee in connection with shooting and killing a California elementary school principal.
Twenty-two-year-old Jared Lee Loughner is the latest in a long line of young men to capture infamy. Mercifully, his name, though never the deed, will soon be forgotten.
In 2007 CNN's Brian Todd reports on details of Cho Seung-hui's deadly barrage at Virginia Tech.
After hearing that legislators in Texas and perhaps other states will again try to change the law to force colleges to allow students to bring loaded concealed weapons into classrooms, I would like to share my point of view as someone who has experienced gun violence in a class firsthand.
On April 16, 2007, iReporter Jamal Albarghouti captured audio of the Virginia Tech shooting as it happened.
In a bid to bring the life-saving emergency service 911 into the 21st century, the FCC is looking at letting citizens report crimes through text messages and even stream video from their mobile phones to emergency centers.
Classes were cancelled Monday at Mid-Atlantic Christian University in eastern North Carolina after a student was shot and killed on campus, according to a statement from the school.
Parents wait anxiously outside a South Carolina school for evacuated students after shots are fired. WPDE reports.
University officials from Virginia Tech on Tuesday disputed a U.S. Department of Education report that found the school in violation of a federal campus security law the day a student killed 32 people in an April 2007 shooting rampage.
A man accused of shooting two students at a Littleton, Colorado, middle school last week was formally charged Tuesday in the incident, according to a spokeswoman for the Jefferson County district attorney's office.
The man suspected of shooting two students at a Littleton, Colorado, middle school was identified as 32-year-old Bruco Strongeagle Eastwood, authorities said Wednesday.
Two people are shot and one man is in custody after a shooting at an elementary school in Knoxville, Tennessee.
On the morning of the 2007 shooting massacre that rocked the country, Virginia Tech officials had begun to lock down administrative buildings and some staffers even warned their families nearly 90 minutes before the rest of campus was notified that a gunman was on the loose, according to a new report released by Virginia's governor Friday.
A 15-year-old boy remained in a psychiatric facility Tuesday after Monroe, New York, police arrested him in connection with a plot to attack his former high school on the anniversary of the 1999 Columbine High School shooting, police said.
Student storms his own school and wounds several children. CNN's Fred Pleitgen reports.
Dramatic closing arguments are presented in the trial of alleged murderer Alvaro Castillo.
A man who was obsessed with the Columbine High School massacre was found guilty of murder Friday and sentenced to life without parole for gunning down his father before opening fire at a North Carolina high school three years ago.
Virginia Gov. Tim Kaine agreed Tuesday to review the report examining the deadly 2007 shootings at Virginia Tech and to correct any errors based on what has been learned since its publication.
The university mental health files of Seung-Hui Cho, the man who went on a shooting rampage at Virginia Tech in 2007, were recently discovered, Virginia Gov. Tim Kaine said Wednesday.
iReporters express their thoughts on the 10th anniversary of the Columbine high school tragedy, on HLN.
Jennifer Muzquiz was "goth" in high school. She had, and still has, multicolored hair, a "face full of piercings," and an all-black wardrobe, even though she no longer identifies with the goth subculture. And while her style had always earned her her fair share of strange glances, she says everything changed for the worse after the Columbine school shootings on April 20, 1999.
Several thousand people poured into the amphitheater at Robert F. Clement Park Monday for an event memorializing the victims of the Columbine shootings on the 10-year anniversary of that tragic event.
The massacre of students and a teacher within the seemingly safe hallways of Columbine High School reverberated so strongly that its reflection can be found in the creations of multiple artists, writers, musicians, and filmmakers over the past decade.
Littleton, Colorado marks the 10th anniversary of the Columbine High School shooting.
In the wake of the tragic shootings at Columbine High School, some schools across the country turned themselves into near-fortresses.
Two people were shot and killed Friday at a community college in Dearborn, Michigan, in what police believe was a murder-suicide, an official said.
A shooting rampage by a 17-year-old former student that has left at least 10 dead at a school in Winnenden, Germany is the latest in a series of attacks in education institutions. Here some of the major incidents.
Bomb threats and a flurry of menacing mobile phone messages sparked panic Thursday among students in Finland, as fears grew that copycat attacks would follow the nation's second school massacre in 10 months
Police in Finland have identified the 10 victims in Tuesday's college shooting as eight female students, a male student and a male teacher.
A masked gunman whose violent YouTube postings prompted police to bring him in for questioning opened fire Tuesday at his trade school in western Finland, killing nine people before shooting himself in the head
Hundreds of colleges across the nation have purchased a training program that teaches professors and students not to take campus threats lying down but to fight back
College students are faced with many challenges each day. It's tough to balance a job with hours of homework, and to pay attention in class while planning an escape route from a lecture hall seat.
There is a growing movement to allow concealed guns on campus to protect against future massacres. CNN's Kelli Arena reports.
"Would you rather just sit there and cower underneath a desk when someone executes you or would you rather have a chance to defend your life? That's what it really boils down to."
Nearly a year after the Virginia Tech shootings, CNN's Abbie Boudreau examines proposals to prevent future tragedy.
It was just 2½ years ago when Elaine Sonnen found out that her 16-year-old son, Richard, had been planning a Columbine-style attack at his high school.
On a 45-acre farm in a tiny town surrounded by snow-capped mountains, Elaine Sonnen lives in fear of her own son.
The building where a gunman killed five people at Northern Illinois University two weeks ago will be demolished, state officials said Wednesday.
The senior at the University of Utah gets dressed and then decides which gun is easiest to conceal under his clothes.
A firearms dealer in Green Bay, Wisconsin, Friday confirmed a bizarre link between the graduate student accused of killing five people at Northern Illinois University and the gunman in last year's deadly shootings at Virginia Tech.
Police say a woman shot and killed two people at a Louisiana techinical college in Baton Rouge before killing herself.
LSU Chancellor Sean O'Keefe talks about the shooting deaths of two graduate students.
Everyday Superheroes: Spontaneous acts of courage in the face of danger by members of the public.
Police say they have shut down a high school in northern Germany after receiving a tip that a gunman planned a rampage there.
German police announced Sunday they stopped two teenagers from carrying out a rampage at their Cologne high school and that one of the students committed suicide after being confronted.
Flags in Finland were flying at half-staff Thursday and government workers observed three minutes of silence a day after a teenager opened fire at his high school, killing eight people before fatally turning the gun on himself.
At least seven people were killed Wednesday after an 18-year-old man opened fire at a high school in southern Finland
Report: Warning signs missed
Better information by officials might have saved lives in the Virginia Tech massacre, an investigation into the deadliest school shooting in U.S. history found.
A new study of school shootings isolates the traits of "cynical shyness" that can lead to violence
Virginia Tech rampage update
When student gunman Seung-Hui Cho went on a rampage at Virginia Tech, killing 32 people before turning a gun on himself, students and teachers had to make split-second decisions.
Cho Seung-Hui's classmates at Westfield High School in Chantilly, Virginia, had a few nicknames for him.
Law enforcement agencies across the nation have received as many as 40 copycat threats to schools since Monday's Virginia Tech massacre, according to the FBI.
Schoolmates and relatives painted a portrait of Virginia Tech victim Jeremy Herbstritt as a friendly, talkative and passionate man, in stark contrast to his killer Cho Seung-Hui, the deeply troubled and quiet loner.
As Kacey Ruegsegger Johnson got ready for bed Monday night, she planned an escape route from her Tuesday morning theology class at Denver Seminary. The 25-year-old Columbine survivor wanted to be ready.
Cho Seung-Hui sent a multi-media package to NBC News that stated "you had a hundred billion chances and ways to avoid today" and now "you have blood on your hands."
South Koreans expressed shock Wednesday, as new details revealed that the Virginia Tech shooter was Cho Seung-Hui, who was born -- and lived for eight years -- in Seoul.
Our country is in shock at the slaughter of 32 Virginia Tech students and teachers. Our national consciousness will be dominated for days by the senseless deaths and the wounding of dozens more on Virginia Tech's campus.
The gunman in Monday's massacre at Virginia Tech was Cho Seung-Hui, a 23-year-old senior English major from Centreville, Virginia, Virginia Tech Police Chief Wendell Flinchum said Tuesday.
At least 33 people, including a gunman, were killed Monday during shootings in a dorm and a classroom building at Virginia Tech, university officials said. Here is a timeline of the events of the morning, according to university officials and eyewitness accounts.
At least 31 people were killed Monday in two shootings at Virginia Tech, according to a state official, making it the deadliest school shooting in U.S. history.
At least 33 people, including a gunman, were killed Monday during shootings in a dorm and a classroom building at Virginia Tech, university officials said.
More than $550,000 has poured in from around the world to help an Amish community recover from a schoolhouse shooting Monday in which five girls were killed and five others seriously injured, according to an agency managing the donations.
A 19-year-old who was taken into custody following a school shooting Wednesday afternoon was charged with killing his father earlier in the day, according to the Orange County, North Carolina, sheriff's office.
The oldest of five students charged in what prosecutors call a failed plot at a Kansas high school can be released under house arrest after his parents post a $50,000 bond, the judge ruled during a hearing Monday afternoon.
A juvenile has been arrested in connection with last week's school shootings in Red Lake, Minnesota, authorities said Monday.
A public memorial and candlelight prayer vigil marks Tuesday's five-year anniversary of the Columbine High School shootings. On April 20, 1999, two students, Dylan Klebold and Eric Harris killed 12 of their classmates, a teacher and then themselves.