Between 1948 and 1971, an Adult Education College occupied the hall, run by Sir George Trevelyan. In 1952 the Attingham Trust was set up by George Trevelyan and Helen Lowenthal, the purpose of the Attingham Trust being to offer American curators the opportunity to learn about British country houses. A summer school has been run by the Attingham Trust every year since 1952 and now takes in a diverse array of country houses around the United Kingdom including none National Trust properties. The Attingham name has since been used worldwide with the American Friends of the Attingham Trust being founded in 1962 in New York City, and the Attingham Society being founded in 1985. The Attingham Society covers the whole world and alongside the American Friends its purpose is to keep its members in touch and the continued education and interest of British country houses.