If your course is less than 12 weeks long, you’ll only need a visitor visa to come to New Zealand. However, if you plan to study for more than 12 weeks you’ll need to apply for a student visa online.
The offer of place from your educational institution (note: the institution must be registered with the New Zealand Qualifications Authority www.nzqa.govt.nz).
If you’re under 18 years old, a written guarantee from the institution or authorised person that suitable accommodation is available to you in New Zealand.
Proof that you have enough money for living costs while studying and living in New Zealand.
A return airline ticket to your home country, or proof that you have enough money to buy one.