Hi Badly drawn girl,
I think you may need to ascertain whether the class is a syllabus or non-syllabus class. A lot of schools that follow a syllabus for the child students may not necessarily do the same with their adults. I know with my adult ballet students although I used some syllabus exercises it was mainly free stuff that I had made up appropriate to the level of adults I was teaching.
I do not have that much knowledge of the RAD syllabus but most syllabus are well thought out and the lower level grades will concentrate on developing strong basic technique. The grade syllabus however is normally designed for children so some of it is not always appropriate for adults.
With some teaching organisations there is a specific adult syllabus. The IDTA for example offers adult medals in all subjects including ballet where students learn a port de bras, enchainement and dance for the exam. It may be worth contacting them as I know they have registered teachers in New Zealand - www.idta.co.uk
Also e-mail this other school and ask them a bit more about their adult classes.