I do not agree with this story involved. Even if they are wearing a helmet to prevent stripping the exams, but if one of them is fraud on the exam. I thought to be wearing a helmet, they will still find a way to corruption, such as writing test answers, small paper into the exam room, or to secretly write down the answers down on a part of their body, the secret cable, others. Etc, so I think that test fraud prevention is to educate, they are true to themselves in the exam.
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