“While shocking and senseless shootings give the impression of dramatic increases in school-related violence, national surveys consistently find that school-associated homicides have stayed essentially stable or even decreased slightly over time. “
http://www.cdc.gov/violenceprevention/youthviolence/schoolviolence/data_stats.html
In my high school, the shooting drills were fairly realistic. The ROTC shooting team would lay down in the space between the buildings with our 1903A3 MILITARY BATTLE RIFLES, and practice our target acquisition and hold with our spotter.
Never had a problem