Yes, I looked at your source data. I mentioned one case of a woman being shot outside an early learning center in a domestic dispute. That is clearly not a "school shooting". You need to understand the source data before trying to represent it in a meaningful fashion.

If a "school shooting" happens outside a school when there are no children actually in school at the time (during vacation for example), how many children are actually affected?

If a shooting happens in a school parking lot at 3:00 am because two people decided to meet there for a drug deal and it went bad, is that really a school shooting?

If you want to go with a simplistic "it happened on school property", then maybe we should be tracking "grocery store shootings", "nail salon shootings" and "corner of 3rd avenue and West Isles street shootings"?

When the term "school shooting" is used it connotes something very serious that has an impact on parents and children alike, society in general has an idea of what is meant by "school shooting" and to ignore that to keep it simple, merely exacerbates the problem and like I said, opens up the opportunity for argument that distracts from the very serious nature of the issues at hand.