Don't stress too much. I've come to realise that without doubt rankings are more important.
In our class this year, first Economics SAC, worst results out. Highest mark was 28/40, I pulled off a 23/40. Our class is all boys too, and we studied quite hard, making summary notes and doing practice questions. Although our teacher is a first year graduate from Vic Uni who has done an Accounting Degree and a Masters in teaching - what the heck right? He also tended to mark our SAC's extremely hard, so if we all end up doing well in the exam, then I guess VCAA will look at the first SAC mark and say 'Hmm, marked too hard, lets bring it up'. Last year, our class averaged 80%+ with 2-3 students going 95%+, but the first SAC this year, those 2-3 students only pulled off a passing score, 20/40, and I was surprised to have beat them as I was a 85% student last year.
Anyhow, the thing with VCE is you've got so many chances until the exam comes. You could do bad and pass the first SAC, but go heaps well by studying harder and PRACTICING in SAC's and get a 90% + mark in the exam, and watch the study score be positive
