The chances of any particular K-12 school in the United States experiencing a shooting incident in any given year is approximately 1 in 53,925.
The chances of a school shooting taking place in a US high school in any given year: 1 in 21,000.
The chances of a school shooting taking place in a US elementary or middle school in any given year: 1 in 141,463.
The chances of dying in a car crash in 2013 is approximately 1 in 7775.
http://www.psychlawjournal.com/2012/12/school-shootings-what-are-odds.html
Man, it looks like I’m more likely to be killed in a school shooting than I am to eat a big mac, and I don’t even go to school!