Change of Address
You must notify your education provider of your residential address in Australia within 7 days of arriving in Australia. You must notify your education provider of any change in your residential address within 7 days of the change. You must notify your education provider of a change of education provider within 7 days of receiving the electronic Confirmation of Enrolment certificate or evidence of enrolment.
Note: These details have been copied from the website below. For further details also you need to refer to this website
http://www.immi.gov.au/students/visa-conditions-students.htm