Bethlehem College's chairman will not be standing for the school's board at the May trustees' election.
The new round of board of trustees elections for all schools will be held on May 30 and Greg Hollister-Jones has confirmed he won't stand.
The chairman has been in the forefront of the on-going investigation into the Kenyan tragedy.
"My daughter left the school two years ago, I've been on the board for 11 years and now I've got no children at the school so I've made my contribution."
Mr Hollister-Jones would not say how many board members would be leaving their roles, but said the school would fit in with a recent New Zealand School Trustees Association indicating 65 per cent of school trustees nationally were planning to run for re-election.
There was always strong interest from the college's parents about who would be standing and there would be new contenders, he said.
New Zealand School Trustees Association president Lorraine Kerr confirmed the majority of school trustees planned to stand again in the 2013 trustee elections. Another 7 per cent were yet to decide.
She said about half of trustees usually stood again. Those trustees who have said they will stand again identified a number of reasons why.
"Forty-two per cent identified they are enjoying the experience, 21 per cent feel they have something to offer, and 14 per cent indicated they are re-standing to provide continuity between boards."
Mrs Kerr said for the estimated 28 per cent who will step down, 77 per cent identified children leaving/left the school as the reason, while 5 per cent thought it was time for new trustees.