Re: ppl who got >90 in subjects how did u study?!?!
For Band 6 subjects, my highest were 90 in Ancient History and 91 in Mathematics.
I believe that Band 6 2U Mathematics is the easiest Band 6 that you can ever get, but you actually have to study and understand the content as opposed to memorizing chucks.
I had interests in both subjects, so that's important although if you are a bright student scaling subjects usually do the trick. If you aren't going to put the effort in, and/or aren't reasonably smart then it might not be the best idea although that's obviously for the student to decide.
The HSC examination counts a lot more than the internal, I got band 6s for both these subjects despite low internals (about 10-20% lower).
Generally, don't give up when you're doing the HSC since you can still make a come-back and have a decent ATAR like myself. If you want a good, solid ATAR you need consistent effort. Start assignments early, study consistently, avoid poor sleeping habits, turn off technology and distractions around you, take a short walk when necessary and don't let one poor mark take the best of you. Also, if you tutor, make sure that you put some good effort in (revise and complete that homework, and ask your damn teacher for help if you don't get something).
Just to warn the reader, the next part is an anecdote. I studied 12 units, Rank 2 Legal Studies for Year 11. I got about 64% for my first test for Year 12(much below average). This affected my morale, and I continued to get average for the rest of the year except for the slightly above average 86 examination mark for HSC. Someone else in the same class got a similar mark for the first test, but didn't let that drop his morale and continued studying hard and got 90s for the rest of his exams and ended up getting a mid band 6 for the subject. So, once again, don't give up and be consistent. It isn't the end of the world if you don't do well at first, but don't let that be an excuse to procrastinate or be lazy (which I don't count as an excuse btw).