> why does the definition have to be so specific?
The definition has to be specific because the words "school shooting" mean different things, mentally and emotionally, to different people. Another commenter posted that "a weapon discharged in a school parking lot, at midnight" would count the same quantity as a Columbine. To me, those two events just aren't of the same gravity.
(to be clear, NO shootings in and around schools, involving children or otherwise, is the correct number of school shootings to have, in my opinion).
I, at least to align the definition with my take on the common thought process, need the definition to include schoolchildren in danger or harmed/worse. It's too ambiguous to include "oops i pulled the trigger aiming at the ground, on a weekend" in the same category as Columbine or similar tragedies.
If we want to get serious about solving the problem, it starts by quantifying the problem. Otherwise it isn't falsifiable, and is unscientific.