Calling themselves Team 2941, the Otumoetai students won the national title with their robot which harvests a sponge ball (about the size of a coconut), which is then taken up along a conveyer belt and catapulted into a net hoop - similar to a basketball game.
For their efforts the team collectively came away with three trophies and $5000.
Daniel, Finn and Braedyn won the Tournament Champion trophy, Daniel, Ethan and Braedyn won the division championship trophy, and John received the division finalist trophy.
Due to commitments Daniel and Braedyn are not going to the VEX World Championships.
While most other teenagers hit the beaches over the summer, Team 2941 spent almost every waking hour since January building their winning creation.
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Cory said: "I'm more scared than excited about going to the VEX Worlds as we now have 30days to come up with another robot which is even better with more firing capabilities."
They were looking at creating a robot with a double cannon mechanism, he said.
Ethan said they also had about 30-40 days to raise $30,000 and were desperately looking for sponsorship - the college had donated $5000.
When asked how they rated their chances, Cory said the competition would be fierce.
"New Zealand teams have done well in the past, but the Canadian teams are always pretty vicious," he said.
VEX Robotics offers students a platform of learning that provides rich career opportunities, spanning science technology, engineering and mathematics.
Cory said many of the past winning teams had been offered university scholarships.
"Going to the VEX Worlds opens doors," he said.
Otumoetai College's electronics and robotics teacher Deon Wessels said he was extremely proud of his young charges who beat out some Year 13 teams to take out the title.
Mr Wessels said the design concept and building the robot were entirely the students own efforts, and Team 2941 richly deserved the win.
2016 VEX Worlds Robotics Championships:
* What: Gathering of top robotic teams from around the world who compete with and against the best of the best. Teams play the game "VEX Skyrise" which is played in a square field where two robotic alliances, comprising two robots each, play against each other.
* Where: Louisville, Kentucky
* When: April 20-23
* Who: 500 international teams