Nearly 40 percent of Leaving Cert students are getting higher grades from the deferred exam, than they were offered in predictive grades.
More than 2,200 will be able to access their marks online from midday.
21 students from Leitrim sat the exams, 20 took them in Longford and 23 students from Roscommon will be getting their results today.
Students who earn more points than in the calculated grades will have the option to start a new higher point course in September.
President of the Institute of Guidance Councillors, Beatrice Dooley, outlines the process.