The national epidemic of school shootings

Students react following a shooting at Marjory Stoneman Douglas High School in Parkland, Florida. Photo: Michele Eve Sandberg / AFP / Getty Images

Since Sandy Hook — just over five years ago in December 2012 — at least 439 people have been shot in 273 school shootings and 112 killed, per the New York Times, citing data from the nonprofit Gun Violence Archive.

The stats: "Twelve of the 272 shootings ... can be classified as mass shootings, events in which four or more people are shot ... On average, there have been seven school shootings each month."