It's interesting to me that everyone here seems hellbent on ethics yet at the same time all of the big companies that we work for are some of the most unethical beasts in modern society.
Cheating on an exam does not always mean one has 'lack of ethics'. It may mean the opposite - say, "my parents aren't paying out of their veins for me to waste time on this nonsense."
I am not talking about myself. Young people are strongly forced to pass the exam by multitude of strong incentives, including societal pressure and prospects for their financial well-being.