I missed an entire section of the maths paper cause it fell on the floor. I didn't study, had a crap exam, missed 20% of the paper and still got an easy band 5...that means i missed 20% of the paper, and got a score above 80%. Figure that one out all those ppl accelerated in maths. Nah, your school mark contributes around half of your SC mark, i dunno if its exactly half or some percentage some guy from the bored of studies invented.
When one girl asked if she was going to fail geo, our geo teacher said "you get marks for turning up to the exam. The fact that you have passed your school exams mean you have passed your SC, even if you turn up and leave the ENTIRE paper blank"