Both Denison College campuses offer a broad range of co-curricular and extra-curricular enrichment programs for students, including:
- Academic Competitions – e.g. Writing, Maths, Science
- Public Speaking, Mock Trial and Debating Competitions
- Solar Car Racing
- Agriculture – Animal Nursery, Aquaculture and Cattle Show Competition
- Year 7 and 9 Camp
- Overseas trips e.g. Italy and Greece, USA, Vietnam and Japan
- Charity Support Opportunities e.g. Blood Bank, Headspace, Shave for a Cure, Melanoma Awareness
- Student Exchange
- Student Representative Council
- Student Leadership Programs
- Gifted and Talented Programs, Aurora College and Distance Education support
- Streamwatch / Waterwatch
- Japanese Club
