The Independent Girls Schools Sports Association (IGSSA) was established in 1963 with the inaugural Athletics Carnival at Perry Lakes Stadium. This followed with the first Interschool Swimming Meet in 1965 at Beatty Park Aquatics Centre. In 1967 IGSA drew up a constitution for the Independent Girls’ Schools Athletics Association. The aim was to organise interschool sporting fixtures, which member schools of the Association of Principals of Independent Girls Schools Western Australia were participants, and to establish necessary financial arrangements. In the same year the schools renamed themselves the Independent Girls Schools Sportsmistresses Association.

A review was held of IGSA sport in 1985. Subsequently the name was changed to the Independent Girls Schools Sports Association (Western Australia).

IGSSA provides member schools with the opportunity to compete in a variety of sporting and cultural activities.

Crest	School	Location	Enrolment	Founded	Denomination	Day/Boarding	School Colors
	Iona Presentation College	Mosman Park	850	1907	Roman Catholic	Day & Boarding
	Methodist Ladies' College	Claremont	1070	1907	Uniting Church	Day & Boarding
	Penrhos College	Como	1180	1952	Uniting Church	Day & Boarding
	Perth College	Mt Lawley	1000	1902	Anglican	Day & Boarding
	Presbyterian Ladies' College	Peppermint Grove	1100	1915	Uniting Church	Day & Boarding
	Santa Maria College	Attadale	812	1938	Roman Catholic	Day & Boarding
	St Hilda's Anglican School for Girls	Mosman Park	1052	1896	Anglican	Day & Boarding
	St Mary's Anglican Girls' School	Karrinyup	1000	1921	Anglican	Day & Boarding

• Rowing
• Basketball
• Hockey
• Netball
• Tennis
• Soccer
• Softball
• Volleyball
• Swimming
• Dance
• Waterpolo

• Athletics
• Cross Country
• Swimming

• Independent Girls' Schools' Sports Association
• Iona Presentation College
• Methodist Ladies' College
• Penrhos College
• Perth College
• Presbyterian Ladies' College
• Santa Maria College
• St Hilda's Anglican School for Girls
• St Mary's Anglican Girls' School