Chinese students cheat, Chinese invigilators turn to metal detectors

When students at the No. 3 high school in Zhongxiang arrived to sit their exams earlier this month, they were dismayed to find they would be supervised not by their own teachers, but by 54 external invigilators randomly drafted in from different schools across the county.

The invigilators wasted no time in using metal detectors to relieve students of their mobile phones and secret transmitters, some of them designed to look like pencil erasers.

Riot after Chinese teachers try to stop pupils cheating