Goals from Conor Kane, Ryan O'Donoghue, and Jamie Aherne sealed the win by half-time even though Bradley Manson pulled one back late on for the visitors.
It was always going to be a tricky fixture for Paddy O'Reilly's side, but quick counter attacking ensured Ireland took control early on. And once they continued to improve as the game wore on.
In fact, there was only 12 minutes on the clock when Kane, representing Lucan CBS, opened the scoring with a cool finish and that set the tone for the attack-minded approach from the hosts.
On 42 minutes, O'Donoghue, from Our Lady's Secondary School in Belmullet, broke free to blast in the second goal as Ireland maintained their dominance in the first period.
Just before the break, Confey College student Aherne added a third goal from the penalty spot and that advantage stayed intact all the way until the 73rd minute when Manson scored for Scotland.
The win was much deserved for Ireland and one that they can take a lot of confidence from due to their positive style of play and clinical finishing.
Republic of Ireland: Donnelly; Hanney, O'Donoghue (Delap h-t), Gibbons, McCarthy (Brouder 55), Scales, Kane (Doherty h-t), Lacey (Morgan 27), Grimes (Doherty 63), Drinan, Aherne.
Scotland: Morton; McRitchie (McDonald h-t), Kirkwood, Laing, Cook, Manson, Banner, Strachan (Smith 64), MacLeod (Kane h-t), Koshoedo, Cunningham (Martin 76).