On the UWS website (http://www.uws.edu.au/medicine/som/applying_to_medicine/mbbs) it states that:
(for non-current school leavers/GWS applicants)
1 semester full time GPA = 6.0
1 year full time GPA = 5.7
By the end of 2013, I will have completed 1 year full time study. However...
For e.g. according to the SU table http://sydney.edu.au/pharmacy/documents/future_students/GPA%20conversion%20SU%20table.pdf
A mark of 75-79 would equal to 6.5 GPA (if i'm reading it correctly that is)
However most forums on this website just state that a credit = 5, distinction = 6, high...