The team, made up of three girls, was awarded a cheque for $1500.
Other schools to win their divisions were from Hāwea Flat, Morrinsville and New Plymouth.
More than 6500 students participated in this year's challenge.
The Ministry of Education's deputy secretary for early learning and student achievement Ellen MacGregor-Reid said a "huge scale of learning" had gone on in the challenge.
"The majority of the students didn't know how to write any code at the start – and yet that was such a stand-out feature of the innovations I've seen."
Partnering with the Ministry of Education, the IT industry was supporting the introduction of the new Digital Technologies and Hangarau Matihiko curriculum into schools and Kura with the 123Tech Challenge.
Tahi Rua Toru Tech is being delivered by a partnership of not-for profit organisations led by IT Professionals NZ and started in its current form in 2018.