You may find some of the following links useful(affiliate organisations, sites of interest etc):
The Independent Schools Association of Southern Africa - ISASA is the largest association of independent schools in South Africa and the Southern African region. Independent schools are also known as private schools.
ISASA schools provide quality, value-based education to over 152,000 pupils. ISASA delivers fifty professional services to its almost 700 diverse school members.
Association of International Schools in Africa - The mission of the Association is to facilitate school effectiveness and to inspire student learning in the international schools of Africa by promoting communication, collaboration, and professional development.
Sifundzani High School -
Sifundzani High School is an eleven-year-old co-educational multi-faith but Christian-based independent school situated about 5km from the 27 years primary school campus, along the Fonteyn Road in the city of Mbabane in Swaziland.
The aim of the school is to prepare students for modern life in a Christian atmosphere and under disciplined conditions with boundless opportunities to develop leadership and character to ensure that they become good citizens of the future.
The school year runs from January to December and has three terms with half-term breaks. The school is international with students from different countries world-wide. Application forms for admission to the school are available at the reception. Entrance tests for admission are normally written in May.