<p>Hmmm well I’m thinking your sample of people isn’t large enough. In my experience, the kids who get 5s are the ones who prepared the most throughout the year, the ones who get 4s crammed before the test, and 3s and below are those who didn’t give a **** about the class. Sure, there are some outliers, but why aim to be an outlier when you have a much higher chance of success if you study?</p>