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