Against cheating in exams:
No gum is allowed during an exam: chewing could disguise a student’s speaking into a hands-free cellphone to an accomplice outside.
The 228 computers that students use are recessed into desk tops so that anyone trying to photograph the screen — using, say, a pen with a hidden camera, in order to help a friend who will take the test later — is easy to spot.
Scratch paper is allowed — but it is stamped with the date and must be turned in later.
When a proctor sees something suspicious, he records the student’s real-time work at the computer and directs an overhead camera to zoom in, and both sets of images are burned onto a CD for evidence.