I dont. I am not over confident and sometimes you may work your ass off but you mightn't be sure if you would get a high mark, due to poor quality, not enough info etc.
Also, l odn't know if this applies to everyone, but l think that if you try your hardest, you kinda expect in a way, a good mark. When you don't do as good, you don't expect to get a good mark...weird huh?
Being a n00b, l don't think you MAY not have noticed the resources on the BoS main page...
http://www.boredofstudies.org/view.php?course=11
and
http://www.boredofstudies.org/view.php?course=13
I understand that you have asked for prelim papers. If you are doing chem and physics you...
Also, plan how much time approx you will spend on each answer.
In the 2 or 5 mins reading time, note down (in your head) the higher marks questions, use a lot of time for these (not too much so that you don't have anytime for others)
l'd refer to this as 'Time Managment', you manage your...
I wouldn't think it would be...but thats just what l think. The HSC is only in Australia....don'tknow about New Zeland...it might be possible, but l'm not sure..sorry
I am going to start either tomorrow or Wednesday..tomorrow l have an 18th to go to...l also have to clean my room...hmm l don't think l should tell you anymore of my private life :)