SOL
There are none in that region that I know of, and hasn't been for sometime. I believe that only a few of the full time courses actually cater for these subjects, for the rest its self study gathering whatever notes together you can scrounge. Having said that, if you want to pass Flight Planning and Navigation there is a minor legend in Auckland who will get you thru, he does one on one or classes thru out the year. Call Pete S on 025-906767. I realise that mobile number may be out of date, so maybe someone else has his latest number, or I can PM you his home number if you like. He's a great guy, I, and probably many many others, would highly recommend him.
Good luck
Nosey