In 2006 the first group of high school children started with a Cambridge home-schooling course on the school premises.

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In 2007 Mrs Amanda Venter (now Gibson) joined the high school and together with Mrs Kaiko De Gouveia developed the idea of a fully-fledged high school. In January 2008 the first high school teachers were employed. The name was officially changed in October 2008 to The International School of Walvis Bay.

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 The first official principal, Ms Henda Meyer, was appointed in June 2009 and the school was registered as a Cambridge International Examination Centre in August 2009. Structural changes were made to the buildings to accommodate the then 153 students. In 2010 the school soon ran out of space. Through a generous offer from a local businessman and his wife, we acquired a three-storey building bordering our existing structures. We started renovations in May 2010 and by October 2010 we moved into the building with the Primary and High School.

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The school now employs over 40 full-time staff and 5 specialist consultants. Student numbers have grown from 153 in January 2009 to just over 400 in 2026.

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Pictured from left to right: Mrs Amanda Gibson, Ms Henda Meyer and Mrs Kaiko De Gouveia.