Australian Visa for students falls under subclass 500
You must be registered for a full-time course with the Australian government.
Of course, you need passport-size photographs, at least 4.
You also have to submit a Statement of Genuine Temporary Entrant (GTE) to ensure you are only here for study purposes and not to settle down.
Scores of English proficiency tests are a must as Australia is an English speaking country.
You will also need proof of civil status if required, proof of monetary and most importantly the character certificate.