Newbridge College topped the list.
Students who attend fee-paying schools are significantly more likely to progress to high points college courses, according to data compiled by The Irish Times.
Students in fee- charging schools are also more likely to go onto third level education.
However, schools in disadvantaged areas, or Deis schools, have also performed strongly by sending high numbers of students to third level.
Here in Co Kildare, the school with the highest percentage of students that went on to third level was Newbridge College, followed closely by Clongowes Wood College, both fee-paying schools.
In third place was Maynooth Post Primary School, followed by Salesian College Celbridge and the Mean Scoil Iognaid Ris, CBS Naas.
New data shows that almost all Leaving Cert students in fee-charging schools progressed to third-level institutions 99.7%, up slightly by 1% from the previous year.
Non-fee-charging schools also sent a large majority of students to college 80%, down slightly by 3% on last year.
The figures were contained in the annual Irish Times Feeder Schools supplement on Friday, which provides a school-by-school breakdown on the number of students who progressed to higher-level education in 2021.