In the first session, Tallaght Community School had a close win over Mercy College, Dalkey on a score of 98 to 90 points.
In the second session, St Patrick’s Cathedral Grammar School scored a much more impressive and emphatic victory over Balbriggan Community College.
The most impressive performance of the evening was that of Castleknock College who scored an impressive 100 points in the third session.
All three winners now proceed to the second round proper.
Results: Quiz no 79; Tallaght Community School 98, Mercy College, Dalkey 90. Quiz no 80; St. Patrick’s Cathedral Grammer School 88, Balbriggan CC 66. Quiz no 81; Castleknock College 100, Gaelcholaiste Reachrann 74, St. Farnan’s Naas 70.