She said the decision brings "certainty, clarity and choice".
Norma Foley has said that a decision has been made on this year's Leaving Cert, and that it brings "clarity" to students.
This comes after it was announced that Leaving Cert students will have the option of a calculated grade, or a written exam in each subject.
The Cabinet signed off on the proposal on Wednesday afternoon, which will see students receive one set of results at the end of the process.
Leaving Cert oral exams will be held during the Easter holidays or shortly afterwards for those who opt to take exams, while students who opt for predicted grades will not sit oral exams.
Cabinet also agreed that the Junior Certificate exams for 2021 have been cancelled.
Responding to concerns that have been voiced by ASTI, Foley said that she will work to address any concerns the teachers' unions may have and "iron out" any difficulties.
ASTI has expressed reservations about the proposed methods for teachers to calculate grades.
Speaking on
Morning Ireland, president of ASTI Ann Piggott said that the union's main focus is not putting any more stress on students.
Foley said that she hopes the maximum number of students will sit the exams, but that both options are of equal value.
