The Irish Under-18s began preparations for July's European championships in Cork when they won the three-match series against their Scottish counterparts at Jordanstown.
Gareth Boreland's lads were in control over the weekend, with wins on Friday (3-1) and Saturday (3-0) but yesterday went down 3-1.
Yesterday Rae put the Irish ahead from second phase penalty corner but the Scots levelled and then scored twice from open play to complete the turnaround.
The Under-16s were in Glasgow for a similar series and lost 3-2 on Friday, won 4-1 on Saturday and lost 2-0 yesterday.
Ireland's Under-18 girls are to go into full-time training in the summer to prepare for the EuroHockey Youth Championship which is in Cork in July.
U16 Internationals (Glasgow): Friday: Scotland 3 Ireland 2 (H Morris, L Adams); Saturday: Scotland 1 Ireland 4 (F Gibson, H Dow, B O'Grady, L Adams); Sunday: Scotland 2 Ireland 0
U18 Internationals (Jordanstown): Friday: Ireland 3 (D Jennings, M Nelson, J Guilfoyle) Scotland 1; Saturday: Ireland 3 (G Sarratt, D Rae, C Crowley) Scotland 0; Sunday: Ireland 0 Scotland 3
Results: U18 internationals: Friday: Ireland 3 (N Carey, A Russell 2) Scotland 0; Saturday: Ireland 2 (F McDermott, A Russell) Scotland 0; Sunday: Ireland 6 (K. Edgar, M Barry, A Russell, J McMaster, M Carey, R Burns) Scotland 2.
U16 internationals: Friday: Scotland 3 Ireland 3 (N Twomey, N Shaw, Y Pratt); Saturday: Scotland 1 Ireland 0; Sunday: Scotland 0 Ireland 2 (C Perdue 2).