The Bandon school ensured that they finished the group stage with a perfect record of four wins from four as they beat Dungarvan CBS by 2-13 to 0-11 in Killeagh.
Hamilton, who rotated their squad, had a 0-7 to 0-5 half-time lead but Eoin O’Reilly’s goal immediately after the restart gave them a cushion.
He added another goal late on while Tadhg O’Sullivan and Billy Crowley were among the points for Aidan O’Donoghue’s side.
The qualification spots from Group 3 had already been decided before yesterday.
St Francis College Rochestown finish their programme against Our Lady’s Secondary School of Templemore tomorrow but they will top the group anyway as they have already beaten the other side to advance, Youghal’s Pobalscoil na Tríonóide.
In yesterday’s game, St Caimin’s College ensured that they finished third as they recorded a 5-14 to 3-13 win against Charleville CBS in Clarina.
Cathal Hayes got three of the goals for the Shannon school while Cathaoir Agnew and Rory Hayes also raised greenflags.
Thurles CBS, who have played their four games, have qualified as the winners of Group 1, but the other side has yet to be fully decided.
Yesterday, Séamus Flanagan scored 5-4 as West Limerick Colleges beat Lismore’s Blackwater CS in Charleville. Denis Donegan got the other goal while Brian Buckley and Mike Sexton also impressed.
That leaves West Limerick on five points, though they will miss out on the quarter-finals if Ardscoil Rís beat winless St Flannan’s College in the final game on Monday.