Yeah, it’s implementing it well that’s the issue. And securely: Now the laptops have Bluetooth and WiFi, and you can assume some talented and obsessive CS students have access and are regularly finding ways to jailbreak them.

Also, having classrooms full of laptops full of tests assume classrooms are secure and at many colleges they’re unlocked by default. There could be a 9am class and exam, then the room is empty until 11, then the same thing until a class at 2 and a night class at 6, and at 8 the PenTesting and Lockpicking Club meets in the room.

Keeping dozens or hundreds of laptops in every classroom also dramatically shifts the reward for burglars which colleges will not like.