By the early 1930s the Hampstead School had rapidly grown and the New End site no longer met its requirements. In January 1934 the Headmaster, Reverend Arthur Wells, moved the school again with its 32 pupils to the present location at Woodhall Estate in Watton-at-Stone in Hertfordshire. The school amalgamated with a school called South Lodge from Sawbridgeworth, Herts in Autumn 1938. In September 1940 the school merged with the remnant of The Limes School of Croydon, Surrey which had evacuated to Langton Matravers, Dorset for the school year 1939/40. In 1939 the first girl was admitted to the school; she became a member of the cricket X1 and won the Fielding Cup. In 1940 boys slept in the basement for a time because of air raids.