This document discusses different forms and approaches to program evaluation. It describes five forms of evaluation: 1) Proactive Evaluation which occurs before program design to synthesize knowledge for decisions, 2) Clarificative Evaluation which occurs early in a program to document essential dimensions, 3) Participatory/Interactive Evaluation which occurs during delivery to involve stakeholders, 4) Monitoring Evaluation which occurs over the life of an established program to check progress, and 5) Impact Evaluation which assesses the effects of a settled program. It also outlines several evaluation approaches including behavioral objectives, four-level training outcomes, responsive, goal-free, and utilization-focused evaluations.