Classy corner-forward Cian Johnson hit 2-8 as Offaly Schools comprehensively defeated Louth Schools in their Top Oil Leinster Schools SFC quarter-final.
The Leaving Cert student, who scored six points for Offaly in a recent O'Byrne Cup game against Dublin, was once again in unstoppable form at the Blanchardstown IT grounds.
Johnson and Dan Wyer netted a goal apiece in the opening half as Offaly established a 2-9 to 0-6 lead. Second-half goals for Louth Schools by Ciaran Keenan (2) and Jonny Commins failed to inspire a comeback as Johnson's impressive tally lifted Offaly Schools to a 3-17 to 3-8 victory.
They will meet an in-form Marist College in the semi-finals, after the Athlone-based school defeated St Aidan's CBS of Whitehall by 1-12 to 1-8 at St Loman's, Mullingar, also on Saturday.
Following two big wins in the group stages of the championship, Marist College established an early 0-4 to 0-1 lead before St Aidan's equalised with a Lee Gannon goal.
Top-scorer Kieran Colclough replied with a goal for Marist College and the sides were tied at the break - 1-5 each.
The Westmeath side's defence restricted St Aidan's to just three points in the second half, and with Ciaran Sugrue and Josh Beaumont contributing some well-taken points, Marist College deservedly advanced to the penultimate round.
Naas CBS are also into the last four after a 2-12 to 1-9 victory over Knockbeg College at Portarlington.
The winners held a narrow 1-6 to 1-5 lead at the interval, but eased further ahead after their opponents were reduced to 14 players.
Killian Thompson and Gary O'Connor scored a goal in either half as the Kildare side set up a semi-final against St Peter's College or Coláiste Eoin, who meet in Gorey today (1.30pm).