There have been 15 school shootings between the attack at Sandy Hook Elementary School in Newtown, Connecticut in December 2012, and the shooting in Marysville, Washington on October 24, 2014, according to a CNN analysis. These were situations similar to the violence in Newtown -- a minor or adult actively shooting inside or near a school. It does not include other incidents involving personal arguments, accidents and alleged gang activities and drug deals. Click on the markers on the map below to learn more about the shootings.
* Injuries or fatalities count includes the shooter, from a self-inflicted wound or killed by police.