PBC and CBC roared into the last four of the Clayton Hotels Munster School Senior Cup in some style.
Pres dismissed Ardscoil Rís 67-7 at Musgrave Park, while Christians were 58-17 victors over St Clemen's at Temple Hill.
With Sean French in the engine room PBC left Ardscoil reeling with four early tries, while CBC had a tougher test and only pushed on in the second half having been 17-10 ahead at the break.
Limerick school Crescent are already in the semi-finals alongside PBC and CBC, while the winners of Glenstal and Bandon will join them.
The final is pencilled in for Sunday, March 18.