65 raw mark in your exam?
Or 65 HSC mark.
...or 65 "raw" assessment mark?
I assume you're talking about your raw examination mark (which gets reported to you as your
aligned exam mark).
2002 Scaling of Courses
30.1 Mathematics
http://www.boredofstudies.org/scaledmeans.php
You might also want to play around with:
Moderation of Assessment Marks
http://www.boredofstudies.org/moderate.php
If you were to receive the highest raw mark in the state, I suppose it would be scaled
magnificently (that was the word you were looking for).
I doubt the highest raw exam mark in the state, for 2U Mathematics would be 65, but even using your example (hypothetical situation), it would also be dependent on your assessment ranking for Maths itself.
I'm not too sure with this though, sorry.