Studying surveying at TAFE NSW by correspondence

Hi all, Im a 25M long time lurker here just looking for a bit of insight on the tafe courses at NSW as I am interested in working in construction surveying. I have read quite a few posts on here say tafe can be done by correspondence but looking at tafe right now the cert iii is only in Newcastle and in person. Is this right or am I missing something. Or is it only cert iv and diplomas can be done by correspondence.