To start - I'm not trying to do anything dodgy here.
My daughter is starting at a new school next year and they have a BYOD policy. Looking on the Goodguys site for laptops the Surface laptop page brought up details of a 10% discount for students K-12 etc having a .edu address.
I've checked and her school address is @education.nsw.gov.au not @edu.au.
The Goodguys site also says we can take her student card in which is plan b but that makes it hard to get a Christmas present.
perhaps a photocopy or photo would work?