Past Papers are most effective when used under simulated exam conditions, giving you a realistic expectation of how you might perform in the actual exam.
The mindset of most Asian parents is, "We worked hard to come to Australia and raise you in this country. Now you go study and get a good UAI and achieve the opportunities or you fail."
Yeah, but in a recent Mathematics Extension 1 Assessment about half the grade or more failed. I can't use this as an excuse for my own marks. So what, if most of the grade did bad? What does that have to do with me?