A new study shows on average 64% of students from Sligo are likely to go to college.
The Irish Times Feeder supplement shows Sligo Grammar School had the highest number of students progressing on to third level from the county, with 89% attending college or university.
In Donegal, 76% of students from both the Abbey Vocational School in Donegal town and Colaiste Cholmcille in Ballyshannon took up a place on a third level course.
Meanwhile, the greatest number of students furthering their education after secondary school in Leitrim came from the Community School in Carrick on Shannon, with 89% going to college.
The study shows that schools in the States most privileged areas are sending the highest number of students to university and these are taking the high-point courses.
But schools in more disadvantaged areas had progression rates as low as 7 per cent.
But President of the Teachers Union of Ireland, Seamus Lahart, says college doesn’t measure your success.
Meanwhile the principal of Sligo Grammar School says figures released today on the number of students attending college or university after leaving the school are slightly inaccurate.
Michael Hall says while he welcomes the fact they have the highest percentage of students progressing to third level in the county, the true figure could be even higher.
Mr Hall says these figures do not take into account students attending colleges overseas.