Watson Heleta opened the scoring in the 10th minute for the Queensland-based school and was in again soon after, seeing his team out to an early 10-0 lead.
Winger Talor Walters extended their lead but the Patrician Brothers hit back before the break via a Robert Jennings try to trail 16-4 at halftime.
However, at the start of the second half, centre Marion Seve ran in an early try for Keebra and they were the only team to score the only other try in the half, with Te-Maire Martin running in under the posts.
Jamian Iroa kicked his fourth conversion of the afternoon to bring the final score to 28-4 and in turn secure his side the national title.
GIO NATIONAL SCHOOLBOY CUP
Wednesday, September 18, 2013
KEEBRA PARK SHS 28 (Watson Heleta 2, Talor Walters, Marion Seve, Te-Maire Martin tries; Jamian Iroa 4 goals) def PATRICIAN BROTHERS BLACKTOWN 4 (Robert Jennings try) at WIN Jubilee Oval, Kogarah
Peter Sterling Player of the Year Medal: Marion Seve (Keebra Park)
GIO Most Trusted Player: Te-Marie Martin (Keebra Park)
Photo: Steve Monty / ourfootyteam.com