Most (but not all) of the international market seem to consist of:
Cathay Pacific, China Southern, Singapore Airlines Cadets, JAL and Malaysian Airlines cadets or Indian, Malaysian and other Asian students who are funding themselves to gain a CPL and return to their home country to obtain a job.
At Bankstown alone (from my observations), I would say that less than 10% are local students and about 2% are international students other than those mentioned above. A few are keen to stay on, but most have opportunities back home. With the current instructor shortage, a few of the schools are offering instructor scholarships to some of the international students, asking for at least two years of full time employment with that company. I would guess that up until recently over 95% go back home, though with these instructor scholarships thay may change.