Unless things have changed, they don't teach radials in the RA-Aus or HGFA syllabus.
Surely that says more about RA-Aus and HGFA (not sure what that is) than anything else?
Position reporting should be given reference a known point such as a navaid or airport, not some obscure local landmark. I would have though that radials and bearings would be fundamental knowledge for anybody flying a craft in the sky, the concepts aren't overly difficult.