You could home school the children, and they wouldn't have to go to a school, but personally, and as Kanga said, I wouldn't want my children hanging about the place for months on end with nothing to do. To be honest, I'm not sure we'd all make it through a week of that intact...
I think school is the best place to meet other children and get an idea of how things are here, so would certainly try to decide on an area sooner rather than later.
My sons arrived here in November, and they started school within a week of getting here. That meant that they at least had some friends and new people in the area before the summer holidays.
Daniela
Arrived in Auckland 6/12/2007