Crime Countdowns

Top 10 School Murders
More Crime Countdowns »

Murder on Campus

High-profile mass murders at schools like Columbine, Virginia Tech and Northern Illinois University have brought school attacks to national attention. Learn more about these and other school murders and get tips from ID and the National PTA® on what you can do to prevent violence in your school community.

Disagree with our ranking? Then cast your vote at the end and tell us who you think should be number one.

In 1999, two murderers terrorized a high school in Colorado. Who were they? Click through to find out ...