To do this though, they had to face a fierce Kaipara College side who proved to be too much as Bay of Islands lost 33-5.
Despite the loss, Bay of Islands still had a chance at some silverware as they took on Cambridge High School in the shield semifinal.
They proved far too good for their Waikato-based opponents, taking out the clash 39-0 after running in seven tries.
Next came the biggest match of the weekend for Bay of Islands: the shield final. Their opponents - Wesley College, a school of considerable rugby pedigree with 10 All Blacks including the late-great Jonah Lomu on their alumni.
But Bay of Islands showed they were a force in an exciting final where they scored five tries to two on their way to a 27-12 win, handing them the shield.
Meanwhile, Kerikeri High School lost their consolation plate semifinal 29-7 to New Plymouth Boys' High School in the boy's division.
Kerikeri had started the tournament strongly with wins against Wesley College (29-7) and Timaru Boys' High School (38-5).
A 19-10 loss to Liston College put Kerikeri in the running for the plate, where they faced off with Westlake Boys' High School.
Unfortunately Kerikeri fell to Westlake, trounced 42-5.
Bay of Islands College Squad: Teuarangi Tana (c), Hinu Watene, Aaliyah Clarke, Pearl Uren-Te Kuru, Jean Brown, Dahlia Hill-Tahere, Ngawaiora Davis, Kayla Wikaire-Mackey, Khan Tana, Daynah Nankivell, Jessica Owen, Kacey Potae
Kerikeri High School Squad: Brady Rush (c), Keegan Thomas, Joe Wadman, Dennis Koro, Nikau Graham, Tukini Navunicagi, Miles Halvorson, Jamahl Pawa, Liam Colley, Chad Boyed, Robert Rush, Tamati Williams