It's an interview process to get into Medicine as well as your test scores.
Note USYD med school only postgrad level. UNSW and University of Newcastle has undergrad level. Check University website for requirements. It's all clear on the page.
AU Citizen, lived in Sydney for 18 years. left HK P.4 Term 1, 9 years old, studied in Sydney, attended USYD (Bachelor of Commerce) and UTS (Masters of Marketing). Now working in HK.