Holders Methodist College beat RBAI in Schools' Cup last eight
Holders Methodist College have defeated last year's beaten finalists RBAI 8-6 in the quarter-finals of this year's competition.
Elsewhere, Coleraine Inst edged out Ballyclare High School 10-9 and Wallace High School won 12-10 at Campbell College.
Sullivan Upper trounced Down High 42-9 and will now face Coleraine Inst in the semi-finals on Thursday 6 March.
Methody will play Wallace in the first semi on Tuesday 4 March.