The number of subjects that a student selects for Leaving Certificate is typically seven, including Irish, English and Mathematics but there is no rule to this effect. The range of subjects offered in an individual school is a matter for the school and will vary in accordance with the teaching resources in the school and the needs and interests of the students.
Typically the minimum entry (matriculation) requirement for level 8 CAO degree courses is six Leaving Certificate subjects; for CAO courses at level 6/7 it may be five subjects. In addition, colleges may specify completion of English/Mathematics/Irish or other relevant specific course requirements, with named subjects for entry and specify the number of higher levels required. It is important that candidates obtain up to date advice in advance of making any decision that could limit their options regarding progression from Leaving Certificate.