ISASA has more than 760 school members in South Africa, Botswana, Swaziland, Namibia, Angola, Lesotho, Mozambique and Zambia. Over 168,000 learners attend ISASA-affiliated schools.

ISASA is a non-profit, voluntary association and schools elect to apply for ISASA membership. Each member school pays an annual subscription fee and, in return, ISASA provides its members with a range of services. These include financial, advocacy, school best practice, professional development and other services.

ISASA does not own or manage any individual schools and is not a governing body for private schools.

ISASA’s vision is of a Southern Africa in which quality education is available to all learners, the value of independent education in contributing to this goal is recognised, and a value-based, public-spirited community of diverse, high quality independent schools is developed.