Very few do. But when they do, break out the where-were-the-parents-why-wasn't-the-kid-getting-help crowd.
If the phrase "murder spree" upsets you, then substitute assault, truancy, delinquency, or any other juvenile crime that grabs the headlines.
IIRC almost all of the past killing sprees by students have been conducted by kids on psychiatric meds.
My point is that a discussion of the serious problem of over-medicating our children is further confused by suggesting that the failure to do so has anything to do with Columbine or murder sprees.