The Coastal Associated Schools (CAS), is a Sub-Association of the Associated and Catholic Colleges, and conducts interschool sport, encouraging participation, sportsmanship and healthy competition. For more CAS information follow the links to the left and below.
- Irene McCormack Catholic College
- Lake Joondalup Baptist College
- Peter Moyes ACS
- Prendiville Catholic College
- St Mark's ACS
- St Stephen's School (Carramar)
- St Stephen's School (Duncraig)