The master plan for evaluation presented in this report was developed by a UNESCO consultant as part of an agreement between the Government of Thailand and the United Nations Development Program for a project providing technical assistance for strengthening educational radio for schools and out-of-school education. Although this plan is restricted to the activities of the Centre for Educational Technology (CET), the Radio Correspondence Project (RCP), and the In-Service Teacher Training Division (TTD), brief descriptions of the activities of other sectors using the radio facilities provided under this education project are included. Formative and summative evaluation procedures proposed are based on a study of the educational radio for school and out-of-school project in its context, and an assessment of the available resources for the evaluation of the project. This report concentrates primarily on recommmending detailed sets of procedures for the evaluation of the in-school sector, and a broader and less detailed framework for the evaluation in the other sectors. A summary of the recommendations and a list of references conclude the report, and appendices provide background information on the project, including a detailed work evaluation plan for CET and an outline of project phasing, job descriptions, and terms of reference for foreign consultants. (Author/JEG)