Student Visa Pre-Assessment Letter
If you are being assessed under Assessment Level 3 you may have been told to apply for Pre Visa Assessment (PVA) from your Australian education institution.
In order for you to be issued with a PVA letter you will need to lodge your student Australia visa application, your visa should be lodged with a letter of offer from the college in Australia or Australia university where you will be studying.
Your student visa application will be assessed, if all the correct documents have been received and the assessment is favourable, you will be issued with a PVA letter.
The original of this letter should be sent to your education provider (the university or college in Australia where you will be studying) to enable them to issue you with your electronic Confirmation of Enrolment (eCOE), at this stage you will probably be required to pay some of your fees and OSCH (health cover) premium.
A student visa cannot be granted without a valid eCOE.

Migration to Australia