Katharine Lady Berkeley's School is an academy school near Wotton-under-Edge, Gloucestershire, England, for ages 11 to 18. It was founded by Lady Berkeley for the use of six scholars in 1384 which makes it one of the oldest surviving schools in England. The old school buildings in School Lane, Wotton-under-Edge, were erected in 1726 with additions later. Shortly after the school had become co-educational, Church Mill was bought in 1908. After the First World War, Carlton House was rented from the Post Office.