"The ubiquitous black globes of cameras in the ceiling are a reminder that this is also a school designed with the unthinkable in mind. The glass in the double row of doors is bulletproof, a feature that costs 10 times what normal glass does. Each classroom door is propped open with a wall magnet, which is connected to a centralized lockdown button that sends all doors swinging shut at once. The below-grade rain garden doubles as a moat that limits the school to three entry points and allows child-level windows to stand, on the outside, high above the ground."