Fourteen to twenty one.
Here is a picture of Takapuna Grammar School and a report card.
My results improved a bit after this, and I managed three "A" and two "B" passes in School Certificate, and University Entrance with a bursary from the sixth form. I then had some poor advice from the school careers advisor and left school from the sixth form, spending several years working as a farm hand. I had expressed an interest in the outdoors. At the end of this period I did my architecture intermediate at Auckland University and began at architecture school.