Based on the information provided by the Deputy, it would appear that the person in question has fully completed second level education and is therefore in the same position as any other person who finds that they need to take subjects in the Leaving Certificate Examination in order to pursue a particular course.
The State Examinations Commission facilitates people to take the Leaving Certificate as external candidates.
In general, people preparing for the Leaving Certificate examination would avail of any provision being made by VECs, as part of their adult education programmes.