Yes, your assessment marks are only used to give the spacing between people in your cohort or classes. The big HSC external exams are the only real way to comparatively test everyone on the same test. This is because each school will set different difficulty assessments and teachers mark assessments very differently too.
haha my rep.. it's been going from 3 to 4 boxes and then back to 3 and then back to 4 for ages
now that i think about it this year has been really dramatic already. i could make a timeline of what dramatic things have happened and i would scramble to just fit everything on one clean line adjacent to the day