Your best bet is to look at a prospective university’s website. College is basically a university and vice versa. I don’t know how Australian and American test scores correlate but any school will tell you this information. SAT’s are aptitude tests in the US. GPA is “grade point average”. A = 4 pts, B= 3 pts, C=2 pts., D= 1 pt. Many schools offer scholarships but you need to check with the school for details.