How Secure Are Our Schools? Locked Tightly, Research Shows

HowSecureFrom 1999 to 2015, the percentage of students who said school doors were locked during class rose from 38% to 78%, though a slightly earlier survey of administrators found a full 93% who kept the doors locked each day.

By the 2013–14 school year, about 88% of public schools said they had a written plan for what to do in the event of a shooting — and about 70% had actually drilled students on using the plan, according to a 2017 report on school safety by the U.S. Department of Education’s National Center for Education Statistics (NCES).

Learn more about what research says about school security here.