St Paul's College offers a wide variety of co-curricular activities that complement the student's academic (curricular) programs. 

Co-curricular activities help students build character, confidence, self-esteem and valuable relationships. 

Summer co-curricular activities offered in Term 1 and Term 4 include: 

• Tennis
• Cricket
• Volleyball
• Athletics 
• Badminton
• Homework Club
• Sports Day
• Music, a range of bands and ensembles.

Winter co-curricular activities offered in Term 2 and Term 3 include: 

• Football
• Soccer  
• Basketball 
• Squash 
• Table Tennis 
• Chess 
• Cross-country
• Pedal Prix
• Homework Club
• Media Club
• Musical
• Music, a range of bands and ensembles.

As a member of the Sports Association for Adelaide Schools, St Paul's College provides opportunities for high-quality competition between member schools in South Australia while fostering fellowship and interaction between member schools through sport.