Te Awamutu Primary School has taken out the Fieldays Tractor Pull competition, beating seven other schools.
The team of 20 fit students pulled a 5000kg tractor 30m through mud in just 31.89 seconds.
Their efforts won the school a $2000 cheque - which it plans to put towards astro turf.
Te Awamutu Primary School had previously completed a speed of 20.62 seconds in the heats, allowing them entry to the finals, held at the Fieldays against Cambridge Primary School.
Principal Craig Pentecost says it was a good opportunity for the students to build on teamwork, communication and resilience.
"I am very proud of all of our students for their achievement and outstanding attitudes during this unique event."