St. Barnabas School offers a variety of extra-curricular activities including:
- Musical Theater Performance for TK – 8th
- Seasonal CYO Sports for boys and girls such as baseball, basketball and volleyball. Additional sports are offered some years depending on student interest and availability of volunteer coaches.
- Just Dance! Dance class for boys and girls in TK – 7th
- Muzart musical instrument instruction
- Digital Revolution technology enhancement classes for 1st – 5th
- VEX Robotics design, programming, and competition for 6th – 8th
- Active Girl Scout and Boy Scout troops for K-8th
- Student Council for 5th-8th
- Green Team for 3rd-8th
- Altar Servers for 4th-8th