This manual has been designed to guide courses on potato production sponsored by the International Potato Center (CIP) in Lima (Peru). It describes the CIP Course Evaluation System that is presently used and provides guidelines on how to use feedback more effectively for improving training. CIP evaluations are largely formative. The CIP focuses on training individuals from developing countries in the areas of research and potato production skills, in an effort toward human resource development. As each course is different, the course organizer should adapt the evaluation system to address the needs of the specific course. This manual has been planned for use by course organizers who have had little or no formal training in course evaluation; it is designed for use as a training module. The sections contain basic information on the system and the objectives and implementation procedures for each component. A guide on how to use the manual and to determine which sections should be emphasized is provided. The manual also incorporates its own evaluation in the form of a pretest-posttest for use in assessing understanding of the manual. The CIP evaluation system has been developed in the Training and Communications Department during the past five years. Criteria for developing multiple-choice, open-ended, and practice questions; instructions to participants; pre- and posttest summary sheets; continued activity evaluation forms; a final questionnaire; and a posttest of the manual are appended. (TJH)