the hast doesnt matter in year 11? have you not seen how competitive it is to get into penrith or girra LOL? i have friends who tried out for hornsby and fortstreet, mind you they're all also in the enrichment class with good grades. didn't do well on the test and therefore did not get an offer...
yeah but if you get a bad score you A HUNDRED PERCENT wont get chosen. grades dont really matter, unless your getting c's and d's. its the EC'S (higher rankign schools) and ur actual percentile is what they look for.
my friends tried out for syd girls with mixed grades of c's, b's, and a's, but...
on the lines of selective entry year 6 maths, but harder. the closest thing i would recommend to you would be like ucat quantative reasoning or icas math questions but both of them are significantly harder than what was assessed in the HAST.