2. I f a course is super hard, maybe the class isn't 'full' of people who are just doing it to 'be cool, maybe that is your judgement and does not affect reality.
3. Great that you solved Tetris beforehand, but is there a point here? Are you implying that high school you was smarter than university peers?
Sorry, but your post seems a little elitist, even thought it's just an anecdote.