A training evaluation system should address four major areas: reaction, learning, behavior, and results. The training evaluation system at GPU Nuclear Corporation addresses each of these areas through practical approaches such as course and program evaluation. GPU's program evaluation instrument uses a Likert-type scale to assess task development, objectives, program outline, instruction, instructional material, student evaluation, training staff, and miscellaneous features. The objectives of course evaluation are to collect detailed, specific data from the trainees, the instructors, and a third-party evaluator and to collate the data into a useful narrative summary. A training evaluation system is seen as an important tool of improving plant performance by assessing trainee performance both in training and in the plant. (KC)