Yep, take it up the food chain Puffin! IEPs in NZ are not just for those with learning disabilities - they're for those with barriers to learning (and I'd say sometimes a teacher can be that barrier!)
Probably you've found these already but I find these sites helpful reading (sorry don't know how to make short links):
http://www.minedu.govt.nz/NZEducati...cationPlansGuidelines/WhoNeedsAnIEP.aspxhttp://gifted.tki.org.nz/For-parents-and-whanauhttp://gifted.tki.org.nz/For-schools-and-teachersGood luck