Two tries by Limavady Grammar captain Mark Woods helped his team to a comfortable 27-13 Danske Bank Schools' Cup victory over Cambridge House under floodlights at Eaton Park.
Limavady scored four tries to their opponent's two, although one was controversial and another was an interception.
In front of a crowd of 400 on a cold evening Cambridge House took the lead with a James Bovill penalty, but from the restart they failed to collect and Limavady were quick to take advantage when Woods crossed for his first, which Jim McCartney goaled.
The winger added a penalty, before Cambridge came back, but after electing to take a scrum after the awarding of an easy penalty they were stopped short.
A Limavady penalty into the corner and the resulting maul allowed Robbie Hunter to crash over to make it 15-3 at half time.
A second Bovill penalty cut the lead, but Limavady were awarded a third try from David Mullan which looked a touch off-side.
Undaunted Cambridge struck back with a move started on the Limavady 10-metre line.
Harry Spiers linked with scrum-half Sam McDonald for Sam Millar to race in. Bovill added the points and Cambridge were back within seven points.
Unfortunately for them a move was intercepted in the centre by Jack Hutton, who was brought down just short and Woods was on hand to score.