To reach the final John Paul College beat Sydney Boys' High School 26-12 in the final-four stage of the competition, having previously recorded five wins and one loss.
"We had a very strong first-half against the Sydney team and I was very impressed with the team performance," said Rimmer. "We seemed to get stronger as the competition continued, and even when sides were a lot bigger than us we competed and battled well."
The players in the squad ranged from 14 to 18-years-old.
And player of the tournament was awarded to John Paul College captain Keegan Pepper earning the Barbarian Tournament Jersey for 2016.
"There a lot of potential stars in the side," said Rimmer. "We will definitely go to the tournament next year hoping to take the overall title.
"Everyone can be very proud of themselves, because they really over-performed."
To see all the results visit www.rugby.world-sport.com.au.