St Colmcille's boys emerged from the U16 Dublin and Leinster championships as they claimed two victories over closest rivals Terenure College in the space of four days to seal their spot in the All-Ireland finals.
They will now go on to represent their province in the All-Irelands, which will take place in Gormanston College on March 24.
It wasn't an easy path for St Colmcille CS and they had to face their closest rivals Terenure in both the county and provincial finals, which were held on Monday and Thursday respectively.
In the Dublin final, the Knocklyon boys, Mark White, David Neylon, Ian Patterson and Darren Leonard were too strong in the end as they took the four singles matches, giving them a comfortable 4-0 lead going into the doubles.
The Terenure boys did save some face as Niall Reynolds and Robbie Neill took their doubles match and then Jack Lawlor and Mark Lavelle also won their encounter.
But it wasn't enough as they fell to a 4-2 defeat and their second loss in a week meant Colmcille's secured their All-Ireland place.
Terenure did get their revenge in the Dublin Division Two final, however, when they beat their neighbours on a 5-1 scoreline that belied the tight nature of the game.
Our Lady's Templeogue took on Wesley College in the Dublin Girls Division One final and Emma Frost, Aoife Keyes, Laura Desmond and Niamh Cox of Our Lady's claimed victory before the Templeogue girls beat the same opponents to book their spot in next month's finals.
In the Dublin finals of the Girls Division Two section, St Colmcille's girls narrowly defeated Holy Faith Clontarf 4-2.
But Northside girls Aisling Golden, Shona Levins, Aoife DeBurcha and Roisin Egan worked hard on their game plan and they reversed the result three days later at the Leinster finals.
Although Knocklyon girls Maria McGrath, Emma Doherty, Emma Cooney and Aoibheann Giblin played some of their best badminton in the final, the classy Clontarf players emerged victorious and claimed their spot in the All Irelands.