Production course in NIDA, VCA or WAAPA

hi, I'm currently in year 12 and want to know which one is the hardest one to get into and what do they look for students. I've herd lot about NIDA and WAAPA and know they're really hard to get into for Music and acting courses, but how hard is it to get in for production course? Though I haven't herd much about VCA, I want to go there the most but I was wondering it might be the hardest to get into as it's part of Melbourne university. Has anyone been through one or even tried out for the auditions? Do you know what kind of students they're looking for? Is there any other university courses for production design? It'll so be helpful if someone can give me some information about any of these schools. thanks, Jess