How secure are our schools? Since Columbine they are locked tightly, research shows

If you visit your typical public school these days, good luck getting in the doors without a keycard, pass or gatekeeper's permission. The building will almost certainly be locked — and guarded.

Even if you’re buzzed in, chances are good you’ll be videotaped for at least part of your visit.

https://www.usatoday.com/story/news/2018/02/27/how-secure-our-schools-since-columbine-they-locked-tightly-research-shows/364557002/