Getting a good rank in engineering is easy, but to do it in the actual HSC is hard
I got 5th in the state last year (2008).
I was the top student by miles, i'd average like 94% in my exams, which were of a high standard, and every1 else would be bunched up around 75-80% - it was a battle for 2nd and the 3rd
I had an awesome teacher, he gave us like all the questions asked in the HSC to date sorted by topic so it was easier to practice for, so when the day came, i was tons prepared.
Really if your good at maths and science, engineering is a along the same thread. The reason smart people tend not to do it, is coz its classified under Technology and Design and not as a science. This makes it easier to do well, but doenst do much for scaling, i.e. my engineering mark didnt count. I really enjoyed engo, though and wouldnt have done a diff subject if i did yr 12 again.