The Independent Sporting Association (ISA) was established to provide a distinguished and well-organized Saturday sporting competition for independent schools that stood outside the traditional frameworks of the
GPS and
CAS, yet shared the same belief in the formative value of school sport. The origins of the ISA are traced to 1990, when a preliminary meeting convened at
Pittwater House under the chairmanship of Martin Orrock. At this gathering John Giacon of
St Patrick's College emerged as a driving force for the establishment of a structured inter-school sporting body. These early discussions drew together a distinctive mix of schools. These included long-standing
boys' schools such as
St Andrews Cathedral School and
St Patrick's College alongside
co-educational colleges including
Redlands,
Oxley College,
Chevalier College, and
Central Coast Grammar School. ==Schools==