Armagh took a 3 – 0 lead on 17 minutes after consistent pressure on the Inst line led to a penalty in front of the posts.  Full-back Alan Whitcroft converted the kick with ease.

The scores were levelled by Inst's Lewis Creighton on 25 minutes and three minutes later Inst hooker Stephen Douglas crashed over the line to put the Belfast side ahead Inst 8 – 3.

Shortly after the restart Stephen Douglas completed his brace of tries when he bundled over the line to put his side 10 points clear.
Armagh dominated possession and territory for the rest of the game but could only convert this pressure into one try, scored by centre Michael Hooks.

Final Score: RBAI 13 – 8 Royal School Armagh

Inst must now wait to see who they will meet in the final as Wallace HS and MCB contest the second semi-final which takes places at Ravenhill on Tuesday afternoon, ko 2.30pm 

RBAI: 15 - Jamie Scott; 14 - Connor Irwin; 13 - Eric Layard; 12 - Daniel McCormick; 11 - Richard Fegan; 10 - Lewis Creighton; 9 - David Drake; 1 - Steven McMullan; 2 - Stephen Douglas; 3 - Michael Spratt; 4 - Adam Glass; 5 - Ryan Lusk; 6 - Michael Young; 7 - Andrew Watt (Capt); 8 - James McCullough

Replacements: 16 - M. Gallagher; 17 - P. Karayiannus; 18 - A Bingham; 19 - M Sinclair; 20 - M Blakley; 21 - D Harris; 22 - D Glover; 23 - M Blackwood; 24 - M Jones

Royal School Armagh: 15 - Alan Whitcroft; 14 - David Colvin; 13 - Simon Cuttle; 12 - Michael Hooks; 11 - Andrew Brady; 10 - Richard Moffet; 9 - Adam Batholomew; 1 - James Scott; 2 - Richard Morton; 3 - Gareth Megaw; 4 - James Sandford; 5 - Jonathon Graham; 6 - Jonathan Clarke; 7 - William Falloon (Capt); 8 - James McCall

Replacements: 16 - A Winder; 17 - D O'Hagan; 18 - S Shepherd; 19 - A Birch; 20  - C Humphries; 21 - S Morton; 22 - S Taggart.