Puketaha Primary School will be celebrating its centenary in September, but as the event approaches staff cannot find either of the two time capsules that were hidden away for the occasion.
The capsules proved elusive, even after the school organised a digger to excavate ground around the plaque it was believed to be buried beneath and paid for ground penetrating radar to help locate it.
The first time capsule was believed to be buried around 1982 by the year eight class before they left for high school. It is believed to contained the children's ideas of what their future would look like.
The second capsule is believed to have been hidden in the attic of the original school building, but principal Geoff Booth said details were sketchy.
"Somebody was talking to a parent and their child was part of the team that put it in. That child is in their 40s now and said it was beneath this tree - so we dug a five metre radius around it and couldn't find anything."
"He said it's definitely in there somewhere but we just can't find it."
Mr Booth said one of the last resorts may be digging up paving stones around the plaque.
"That's high risk. We would love to talk to anyone who might know more," he said.
The buried capsule is believed to contain no metal, which has made the process far harder.
Mr Booth said the centenary was not just for the school, but for the Puketaha district as a whole. It reflected how the community has grown.
When the school began in 1916 there were 20 pupils from seven families. That had climbed to around 150 pupils in the 90s. Today the school has almost 300 pupils. Some families have had four generations attend the school.
Two years of planning have gone in to the event, which will take place over two days.
Kicking off on Friday there will be a registration and tour with a presentation from the children.
"The classrooms have been divided into the different eras. Part of that will be what would it have looked at in different 20-year periods," Mr Booth said.
Displays will include stylised classrooms and outfits from the different eras.
"Learning looked very similar from the 60s through to the 90s. The desks changes slightly but you were in rows with the teacher at the front of the class room who delivered information," Mr Booth said.
"Learning looks and feels very different to how it would have in the past. It's less autocratic and hierarchical."
He said the only thing that had not changed was the schools principals of aim high, celebrate differences, show fairness, have integrity and show care and respect.
A cake to celebrate the 100 years will be cut by one of the first and the oldest surviving student at the school, 92-year-old Inewa Ward who joined the school in 1930 at age 5.
"There were only about six of us there at the time, it grew quite a bit," she said.
Inewa remembers a time when half the children would ride horses to school and the whole thing consisted a single room where all age groups were taught at once.
"Those teachers, I don't know how they did it," she said.
Today there are four learning environments, each roughly the size of three classrooms.
"I remember hot milk at the gate, it got hot in the sun and all creamy. It was horrible," she said.
Inewa recalls the single fire sat in the back wall of the classroom - the only heating for the children in winter.
Ex-student Bryan Mayall, who was at the school a decade after Inewa and has been part of the committee organising the centenary, remembers the school dances, when all the tables would be passed out of the windows to make room.
The school centenary celebrations will run from September 23-24 with the main event starting on the Saturday from 10am. Visit www.kmwebsitedesign. co.nz/centenary for more information on the centenary. Attendees need to register.