IAPS was founded in 1892, as the Incorporated Association of Preparatory Schools. In 1981 IAPS merged with the Association of Headmistresses of Preparatory Schools, and ten years later moved its headquarters from Kensington to offices in
Leamington Spa, before relocating again in 2021 to its current headquarters at Bishop's House, Artemis Drive, Tachbrook Park, Warwick CV34 6UD. In 2007 the Incorporated Association of Preparatory Schools changed its legal title to IAPS, and became known as the Independent Association of Preparatory Schools. In 2010, this was shortened to the current form. == Organisation ==