The children also take part in Whitebait Connection programmes, learning about the link between the bush, hills and waterways and how they contribute to the huge Kaipara Harbour catchment, school principal Autumn Ede said.
"Through that association, the children have had so many amazing experiences," Ms Ede said.
They include learning about the longfin eel, being involved in an elver translocation programme, monitoring water quality and identifying fish and insects in local waterways.
The pupil's environmental science lessons are grounded within the school's perimeter as well as the wider district, where there are already healthier waterways thanks to the school's riparian seedling raising and planting days.
Their plants are grown from eco-sourced seeds, gathered by the children under the guidance of local iwi, farmers and other conservationists, Ms Ede said.
"Our workforce is 32 kids and most of them are between five and eight years old."
The environmental curriculum began many years ago with the school's gardens and beehives.
"Then five years ago the big old pines in the school's back paddock were taken out, and they had all this spare ground.
"The kids planted native trees and that gave the school even more of an environmental focus."
In the last year Living Water Community Initiatives Fund has awarded $51,000 to nine community organisations in the Hikurangi and western Kaipara area. The other local recipients of Living Water grants are: Tanekaha Community Pest Control Area ($3903); Nga Kaitiaki O Nga Wai Māori ($4900); Integrated Kaipara Catchment Management Group ($5000); Forest Bridge Trust ($7000); Northland Fish and Game Council ($5200); Mountains to Sea Conservation Trust ($3402); Otamatea Harbour Care Society ($5736); Whakapara Marae ($10,000).