Drama O'Dea students present a yearly drama production. They also join the Holy Names girls for Dramafest and other cooperative school productions. These clubs are open to all O'Dea students. Meetings are held before school, at lunch and after school, as well as some Saturdays. Junior State of America Meetings of the political discussion group are generally held in the morning before school.
Members attend two regional conventions during the school year.
Student Ambassadors Student Ambassadors serve as Open House Guides, host eighth grade visitors and accompany the Director of Admission to Catholic elementary schools in the fall.