Columbine changed everything. During a seminar for school administrators Tuesday at Crews Lake Middle School, Pasco County Sheriff's Lt. Brian Prescott emphasized how everything from law-enforcement responses to the ways schools handle crises was altered by the 1999 massacre at Columbine High School in Littleton, Colo. ...more

March 25, 2009

A woman admitted she helped her troubled, bullied 14-year-old son build a weapons cache by buying a rifle and gunpowder, but investigators still don't know whether she was aware her son was planning a deadly school attack. ...more

September 24, 2008

Police cannot stop and search people based solely on anonymous tips, the Florida Supreme Court affirmed Thursday, but the justices said that does not mean officers cannot respond to those kinds of reports. ...more

September 19, 2008

Misapplied Skills Regarding "Weapons Automatic For The People, But Not Government," June 21: ...more

June 27, 2008

A 14-year-old boy who admitted that he planned a Columbine-style attack on a high school outside Philadelphia was sentenced Wednesday to as many as seven years in a juvenile treatment facility. ...more

December 20, 2007

Clips on YouTube show teenage girls scratching, punching and pulling hair in brawls as boys look on in amusement. ...more

December 16, 2007

TAMPA - Two of the three Freedom High School students arrested this month after Tampa police said they plotted to set off an explosion at the school entered plea deals today in juvenile court. ...more

September 26, 2007

Hundreds of people gathered under blue autumn skies Friday to dedicate an expansive hillside memorial to the Columbine High School massacre victims, after more than eight years of money struggles and occasional disputes. ...more

September 22, 2007