The general consensus is that an 80+ WAM is already pretty good, but it depends a lot on various circumstances (see below). I think you’ll get an idea of the difficulty once you start your course.
Some factors that can change difficulty in getting a “higher” WAM:
- personal circumstance: having to work, having to take care of someone, having a mental/ physical disability
- individual unit difficulty: unlike VCE where scaling tries to make all units as “equal” in difficulty as possible, uni doesn’t really have that between units. Downside of taking only “easy” units is that you’re paying thousands to learn very little, which is probably not worth it.
- individual unit grading system: some units and facilities will give scores according to a bell curve. Others use the raw scores you achieved in the proportions described in the unit guide.