The relentless beat of horrifying school shootings feels like an unending trend. The contemporary threat of violence in American schools — there have been 377 school shootings since Columbine in 1999 — has incontrovertibly changed the nature of campuses: law enforcement and security presence has increased, even the youngest schoolchildren routinely perform lockdown drills, and students are heavily scrutinized by counselors and peers for any signs that they might perpetrate violence.
Researchers reported a 70 percent decrease in reports of guns being carried on school campuses in California.
