In a distinguished career as a top corporate lawyer Derek Dallow was involved in his fair share of multi-million-dollar projects.
But after surviving his first term as a teacher at Glenfield Primary School, he says taking charge of a classroom of 7-year-olds has been his greatest challenge.
"Because it's so intimate and personal. It's emotional-level stuff, as opposed to business and corporate and money stuff ... there are millions of little challenges every day."
After 32 years as a corporate lawyer, Mr Dallow, 55, changed tack, deciding he had about 10 years of work left to try to make a difference in education.
He had experience in education, having served on the boards of trustees at his children's old schools, and chaired Massey University's advisory board for 10 years.