A Half-Century of School Shootings Like Columbine, Sandy Hook and Parkland https://nyti.ms/2WE7TgC

A Times analysis of school shooting data identified hundreds of deaths and injuries across more than 100 episodes since 1970.
The New York Times U.S. School Shootings and Armed Attacks, Parkland, Fla, Shooting (2018)
By WEIYI CAI and JUGAL K. PATEL from NYT U.S.
https://nyti.ms/2WE7TgC