Sasha Abramsky:

“Security was the number-one factor for me in choosing a school,” explained one of the mothers I met late last winter at a Montessori preschool in an affluent suburb of Salt Lake City. A quality-control expert at a dietary-supplement company, the woman said she vividly remembers the jolt of horror she felt when she first learned of the Columbine massacre in 1999. So when the time came to send her child to preschool, she selected one that markets itself not only as creative, caring, and nurturing, but also as particularly security-conscious.

To get the front door of the school to open, visitors had to be positively ID’d by a fingerprint-recognition system. In the foyer, a bank of monitors showed a live feed of the activity in every classroom. After drop-off, many parents would spend 15 minutes to half an hour staring at the screens, making sure their children were being treated well by their teachers and classmates. Many of the moms and dads had requested Internet access to the images, but the school had balked, fearing that online sexual predators would be able to hack into the video stream. All of the classroom doors had state-of-the-art lockdown features, and all of the teachers had access to long-distance bee spray—which, in the case of an emergency, they were instructed to fire off at the eyes of intruders. The playground was surrounded by a high concrete wall, which crimped the kids’ views of the majestic Wasatch Mountains. The imposing front walls, facing out onto a busy road, were similarly designed to stop predators from peering into the classrooms.