From what I've heard and looked at so far, and from what my teacher has told me, it is only the HSC examination that contributes to your ATAR. If you can't sit your exam for whatever reason, they use the mark you got in the trial. As far as I know there are no ranks/moderated assessments marks as it is a VET course. I could be wrong, talk to your teachers
Pretty good, I got 89 in trials so I'm hoping for 92+ in the HSC exam. Basically I found IT TVET to be more like IST in years 9 and 10. My class were bale to to do the HSC IT paper and get 80 without study so we moved on to a cert III. I haven't made any notes apart from class work, we had no text book. My study patten for IT is past papers.