Your passport country and course(s) of study determine your Assessment Level. The Student visa subclass under which you will be assessed is determined by your main course of study, even if you are studying a package of courses.
See: Student Subclass Options
More information about Student visa Assessment Levels is available.
Student Visa Program - Assessment Levels (formerly known as Form 1219i) ( 73KB PDF file)
Applying for a student visa (formerly known as Form 1160i) ( 75KB PDF file)
Student visa chooser
Select the country of your passport and answer the questions to be directed to your appropriate visa.