The following Junior Certificate subjects are available to students at Coláiste Aindriú:
- Irish
- English
- Mathematics
- Geography
- Science
- Art
- French
- Home Economics
- Business Studies
- Technical Graphics
- Materials Technology (Wood)
- Metalwork (Materials & Technology)
- Computer Coding.
- Religious Education
- Civic, Social & Political Education
- Social, Personal and health Education
- Physical Education
- Careers