Its now really about the subjects which will get you the ATAR, its about the marks you get in subjects which matter aswell.
Most of the you're subjects decent/good anyways.
No, just have a good understanding of the prelim course.
My science teachers said you only need that, especially for chem, for biology and physics its not that of a big deal.
I rpesume if they are going to cut off 50 people, and all 150 coicidently have 89atar they'll look at specific subject marks, e.g if it was a science course they would look at peoples marks for their hsc courses.
But i doubt all 150 would get the same atar, so they would likely either take the...