This handbook is guided by the belief that evaluation should be supportive and responsive to projects, rather than become an end in itself. It provides a framework for thinking about evaluation as a relevant and useful program tool. It is written primarily for project directors who have direct responsibility for the ongoing evaluation of W.K. Kellogg Foundation-funded projects. However, our hope is that project directors will use this handbook as a resource for other project staff who have evaluation responsibilities, for external evaluators, and for board members.