DUNDALK SCHOOLS qualified for final for only the second time with a deserved victory at Pairc Tailteann.
Their last final appearance in 2002 ended in victory over St Patrick's, Navan, when one of the stars was current All Star midfielder Paddy Keenan.
Star of the show this time was corner-forward Ciaran Byrne, who scored 2-8.
Wing-back Sean Thornton started the goal-fest and Byrne then found the net with a low drive to help Dundalk into a 2-6 to 0-2 interval lead.
St Mary's from Edenderry hit the first of four second-half goals courtesy of sub Dean Cummins on 37 minutes, but they had Ewan Farrell sent off three minutes later and Dundalk sealed victory with 1-5 in a seven-minute spell, Byrne hitting all but one of those points.
SCORERS -- Dundalk Schools: C Byrne 2-8 (0-3f), Sean Thornton 1-1, C Doyle 0-2, P Reilly, K Hearty, A Sharkey (1f) C McKeever 0-1 each. St Mary's Edenderry: C Hurley 1-2 (0-2f), G Leech, D Cummins, L Djennedi 1-0 each, C Nolan 0-1.
DUNDALK SCHOOLS -- D Breen; C Lenehan, D Smith, R Williams; Sean Thornton, D McMahon, S McAuley; P Reilly, J Stewart; K Hearty, A Sharkey, C Doyle; C McKeever, Shane Thornton, C Byrne. Subs: C McMenamin for McAuley (58), R Quigley for Shane Thornton (60).
ST MARY'S EDENDERRY -- C Cummins; E Holton, T Hickey, C McNamee; L Pender, E Farrell, P Fay; D Glynn, D Grehan; S Haslim, C Nolan, S Doyle; H Murrin, C Hurley, G Leech. Subs: D Cummins for Haslim (21), G Long for Pender (21), C Lawton for Flynn (h-t), A O'Connell for Murrin (36), L Djennedi for Doyle (47).
REF -- D Gough (Meath).