have u check the co-opbookshop website http://www.coop-bookshop.com.au/bookshop and just follow the interface select uni & campus >select unit number & name it should show u texts required best to get them before university starts otherwise the lines would be long.
I know for my school (school of computing & mathematics) they use the normal distribution (bell curve) to scale the marks accordingly, sometimes individual assessments.
The average for mine is about 60 people. Depends whether the subject is popular or not, when i mean popular how many courses r doing it at the same campus.
At uws its logic & statistics, marketing, training, programming, e-business, web development, information systems, databases using SQL, communications, business, general information technology.
all comprises of my degree.