On the topic of this thread, I would like to point out that while your work for revs is commendable and I'm sure you worked hard - I think it's unfair to insinuate that humanities subjects require more work than maths subjects to get high marks. Firstly, in some subjects (eg. physics, biology) you have to do full prac reports, some done at home (which tend to exceed the 30-40 page mark for many people) and some done at school (which do indeed involve memorization of tons of analysis of results; because most people don't want to risk losing their train of thought in high pressure SAC conditions so they memorize the contents of their report). Spesh maths requires constant hard work and study. Most maths/science students absolutely rip through one trial exam after another after another after another. If they don't, then they don't get that much of a high score. Now I'm not saying that this amount of hard work is in any way greater than the hard work you do for your humanities subjects, but I'm saying that it roughly evens itself out in the end. Also maths/science tends to be more competitive so getting a higher score is that much harder. It is my belief that (ignoring the luck that inevitably plays its part in these things) to get a scaled score of 45-48 in a maths/science subject would take roughly the same amount of effort as it does to get one in a humanities subject.
Although you have to note that from my subjects I a) have a clear bias and b) have no real clue about how humanities works other than Yr 10 and below. But I used to really like history back then (not as much as maths/sci tho) and found that if you're interested in the topic it's an interesting subject to study. And you also have to consider that many top maths/science students really feel a bit bogged down by the constant revision and stuff when what they would really want to do is to move on and learn new and wonderful things. You don't have that sort of restriction in many humanities subjects which affects your mindset towards studying. But again, the evidence for my ideas is meagre (if it exists), so it's just an opinion.