Gonzaga College, Coláiste Iosagáin and Glenstal Abbey are the highest-ranking schools in the country in terms of the number of pupils that progress to university.
The Sunday Times' 2010 Parent Power Guide published today shows that eight out of the 10 top schools in the country are fee-paying.
And, out of 400 schools listed, girls' schools and Irish-speaking schools outside the Gaeltacht seem to outperform other schools.
Co-author of the report Kate Butler said all-girls schools were dominating both the top 10 and the regional league tables. She added that educators told the reports authors said girls' school may rank higher because "girls are just good at doing exams".