Postgraduate study refers to university level courses undertaken by students who have significant work experience and/or completed a university level undergraduate degree. Postgraduate courses include graduate certificates, diplomas and masters degrees.
There are various pathways to a postgraduate program. It is possible in some instances to enrol in a university-level graduate certificate or graduate diploma on the basis of relevant employment or life experience. From here you can progress to a higher level postgraduate qualification such as a master by coursework on the basis of your success in these courses.