Why must we do ACE?

I shall cut the crap. OK, why must we do ACE? When I get B4 for all the exams and stuff means my final grade will be B4, so why do ACE and kill yourself? The teachers make it compulsory, and we must do it, when it's supposed to be self-study. Why must we do ace? Attending lectures in the afternoon and writing reports. If got nothing on in the afternoon, go home and sleep lah! Why must attend those boring lectures? If suffering from insomnia then play computer lah! Why bother about all those shit ACE? Anyway, since we can do ACE in Term 4, then why urge us to do all those shit? Plus, something which we spend a whole night doing only gives us 3 ACE. This is rather dumb! I mean like do you like to spend your whole night mugging and get 3 more marks for your exam when you already top your class without them? This is absurd! You have to understand our current situation too! Like Mr Krison said, "I sleep less than 6 hours a day." So? I sleep less than 5 hours a day on the average. So, you are already lucky enough. Let's look at other schools, Sec1 people have better life than P6 people. See? P6 you get PSLE, which is dumb because there are too many rules. Now Sec1 you should get a bit of a break, you have a whole Sec4 year to study anyway. Then we got 7 Chinese periods, and 谢谢谢 uses 2/7 per week to teach Moral Education and make us do homework that she doesn't even collect. Don't tell me A-Levels test Moral Education, that's something else that's absurd. So anyway, we should have our rights to slack! Not get killed by the teachers!