Two teenage boys had established a "kill list" and exchanged messages about carrying out an attack on Sabin Middle School.
Laura Farber's documentary "We Are Columbine" makes its Colorado debut this weekend at the Denver Film Festival.
Giffords PAC is spending $1.5 million to air the ad in Colorado’s 6th Congressional District.
The gun control advocacy group founded by Gabrielle Giffords lambastes Mike Coffman's A-rating from the NRA.
There are school safety teams and door locks, but also suicide prevention and deescalation techniques.
Two gun reform activists -- one who got involved because of the Columbine shooting, and one a current student -- share notes on how the gun reform movement has shifted.
An early copy of a disciplinary report provided to The Denver Post and Channel 7 had errors, the Department of Education says.
As students at Arapahoe High School return to class after last month’s attack, state lawmakers are working to boost a program designed to prevent school violence.
Motive for the attack is still under investigation but Sheriff Robinson pointed to a disagreement the shooter had with a speech and debate coach who has yet to be named by officials.
Claire Davis, the 17-year-old student shot in the head during the attack on Arapahoe High School earlier this month, has passed away from her injuries.