There are children on the island, and a school there. When they get to high school age they leave the island to attend school in New Zealand and return afterwards - or stay in NZ. At the time of my journey there was a child protection order on the island which means if you planned to take children under the age of 16 then you need to apply for a visa. Government jobs don't allow taking children. One of the unfortunate obstacles to people immigrating is there is no public long term plan that I've seen about when that order will be lifted.