In organisational learning, the basic premise is a shift in the way that the members of the organisation will learn new ways to perceive and solve problems. Therefore, there is a need amongst professionals to be aware of a new set of systematic evaluation methods that are able to capture the impact of a program that will bring about changes in organisations. The work undertaken was a pilot project to identify the professional development needs of fifty District Directors employed by the Bangkok Metropolitan Administration, (BMA) Bangkok, Thailand, to produce an operational strategy for a learning organisation and an improvement in work quality. The population sample consisted of the Permanent Secretary, two Deputy Permanent Secretaries, and all fifty District Directors of the BMA. It involved a Proactive Evaluation and a mixed methods approach, using both quantitative and qualitative methodologies. The quantitative research component applied a three-round Delphi survey of the fifty District Directors. In order to draw these various elements together, a professional development training policy designed to benefit present and future District Directors of the BMA was developed.