Stop school cheats

When it comes educational discipline, and in particularly preventing cheating at school, the Chinese seem to be in a world of their own.
The principal of this middle school in Wuhan, Hubei province, ordered the students to sit their exam outdoors on the playground in order to prevent cheating from taking place. If you don't think these measures go far enough what about this way of Chinese way to prevent cheating at schools. It is probably the most effective and cost efficient in the world. This device is placed on the head of the student in a way that the student can only see their own work. Teachers of the world, take a note!