Start off by doing your very best at every challenge faced in life. But if you really do believe that is is a waste of your time, then you are allowed to half-ass. Just make sure that you put something; anything down for every question. Never leave anything blank so that you can at least get partial credit. You need to meet the expectations of your parents and grades are a surefire way to do so.
This is the kind of film that makes me want to curl up into a ball of despair and wish I was never born on this planet.