Parents ask: Do school shooting drills traumatize kids?

BUFFALO, N.Y. — Long before an ex-student opened fire on his former classmates in Parkland, Florida, many school districts conducted regular shooting drills — exercises that sometimes included simulated gunfire and blood and often happened with no warning that the attack wasn’t real.
The drills began taking shape after the Columbine High School shooting in 1999. But 20 years later, parents are increasingly questioning elements of the practice, including whether the drills traum