Current Government regulations for private language schools in NZ are:
Courses three months or more
If the course is of three months duration or more and the withdrawal occurs up to the end of the tenth working day after the first day on which the PTE requires the student to attend the establishment:
In such cases the PTE may deduct up to 25 per cent of the fees paid, provided the PTE incurred costs to this amount and can justify these costs.
(As per section 235A(1)(a) and (b) of the Education Act and a