Around 150 former Wanganui Collegiate students and their families gathered at the school over the weekend for a special reunion.
The old boys were members of the Big School Society, an organisation for former students who left the school 50 or more years ago.
Organiser Tony Hunt said the society had a reunion every two years, with old boys visiting from all over New Zealand. This year the old boys left the school in 1965 or earlier.
Mr Hunt is himself a member of the society, although one of the youngest - he left Wanganui Collegiate in 1963.
The programme included an informal gathering on Friday night, tours of the school on Saturday morning, a formal luncheon on Saturday, and a service at the school chapel on Sunday.