The Derry school stole the show by netting another special double, claiming victory in the U12 Minor Schools' Cup and then lifting the Malcolm Brodie U16 Senior Cup.
The U12 prize came after a 1-0 victory over Boys' Model and the success story continued when the Under-16s celebrated a 3-1 win over St Joseph's Derry.
St Joseph's went in front through Emmett McGilloway but the Buncrana Road boys hit back in style. In the second half Jack McLaughlin's close range volley levelled the scores and then Conor O'Donnell found the target with a superb header.
The College threatened to go further ahead but St Joseph's keeper Oisin Burke saved from the penalty spot to keep the Creggan men in the game.
But a magnificent solo effort from Aaron McGurk in injury time completed St Columb's second successive Northern Ireland Cup 'double'.
The game of the day was in the Intermediate u14 cup between Boys Model and Clounagh Junior High School.
Clounagh took a two goal lead thanks to Alberto Almanzar inside the first few minute.
Boys' Model mounted a comeback and themselves had a two goal lead at 5-3 in the second half.
However the match ended 5-5 and went into extra time. Boys' Model scored the goal in the second half of extra time to win the game 6-5.
In the other finals St Brigid's Derry ran out convincing winners of the Minor u12 plate, beating Omagh High 4-1 while Devenish won the u13 cup in a close game with Fivemiletown which finished 1-0.
De La Salle College clinched the Senior u16 plate while St Patricks College (Belfast) were the biggest winners on the day in the U14 plate, triumphing 6-1 while Colaiste Feirste won the u15 cup with a 4-2 win over St Colm's Draperstown.
The final game of the day was the U18 youth cup between Ballyclare High and Grosvenor Grammer and it was so evenly contested penalties would determine the winner as neither team could break the deadlock.
Grosvenor Grammar came out on top in the shootout with their goalkeeper Tim Larmour saving three penalties.
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