Mother Teresa of Calcutta Catholic School offers numerous activities and clubs geared to the varied interests and talents of its students. Some clubs are offered during the school day, while others are offered after school. Clubs and organizations may include but are not limited to:
- Student Council
- National Junior Honor Society
- Altar Servers
- Safety Patrols
- Club for Trimester 1 (2025-2026 School Year)
- Arts & Crafts
- Birdwatching
- Board Games and Puzzles
- Cooking
- French
- Lego
- Gardening
- HSPT Math Prep
- HSPT Reading and Test Strategies Prep Club
- Minecraft
- Mighty Crusaders Sports Club
- Musical Theater