This guide presents detailed information concerning the purposes and process of program evaluation, the role of the evaluator, and the development of an evaluation plan or design. Instruction is provided in selecting or developing assessment instruments, collecting and analyzing data, reporting evaluation results and applying the findings. The manual, which includes learning exercises, was developed under the California Evaluation Improvement Project as a study guide for use in inservice training workshops for program evaluators, teachers, principals, curriculum specialists and other individuals responsible for school programs and those who aid educational administrators ascertain program effectiveness. (EVH)