in my trial last year i got.....80% or so.....ended up with a band 6
leading in2 hsc peoples....
wat ya gotta do is look at ur syllabus, in most sciences this is the bible, but in e+e where there are no mathematical questions, this can get you an easy 50 marks straight away just knowing a few answers already, the rest is ur mulitple choice where uve gotta just look through the answers, dont be fooled, some are intising, but u should see the frauds,
then 2 ur option.....depends on wat option u do....if u havent done much work here yet, i would honestly advice u look through stuff for the introduced species option and do this, it is basically just remembering 2 case studies looking at bits under a few headings and then one other section fo general definitions and history,....good, simple, straight forward option....
good luck in hsc, if ya got any qs, feel free 2 ask me, ill try 2 check this forum but dont watch it much, pm me if ya wanna..
cheers
-dawso