In September 1942, the training school moved to Caen Wood Towers (Caenwood Towers), Highgate (this building was later renamed Athlone House). By this time it was clear to the Air Staff that intelligence was a positive and vital element affecting Air Ministry policy, strategy and planning, so the RAF Intelligence School was officially constituted and given a proper home at Caen Wood Towers. The site was set up as Royal Air Force Station Highgate around grounds and outbuildings of the Caen Wood estate. This included accommodation, messing, equipment stores and a medical centre. Because of the sensitivity of intelligence and covert operations during the war, the site was not made fully public and it operated under the guise of an RAF convalescence hospital. A number of different courses were run lasting between five days and three weeks, teaching Air Intelligence, Escape and Evasion, and Basic Intelligence Analysis for direct entrants to intelligence work. The majority of the instruction was given by visiting specialists (from Air Ministry, MI-6, MI-9, Central Interpretation Unit Medmenham and Station "X" at Bletchley Park.)