"The parameters CNN followed in this count are:
- Shooting must involve at least one person being shot (not including the shooter)
-Shooting must occur on school property, which includes but is not limited to buildings, fields, parking lots, stadiums and buses
-We included gang violence, fights and domestic violence, but our count is not limited to those categories
- We included the accidental discharge of a firearm as long as the first two parameters are met -- except when the sole shooter is a law enforcement or security officer"
Tbh the parameters for this study/survey were pretty generous, none one or very few died in almost all of these (other than Parkland, Marshal, and Santa Fe)