This handbook clarifies roles and responsibilities in evaluation and documents processes methods and associated tools. It describes the main phases of an evaluation !V i.e. planning conducting the evaluation reporting and managing and communicating outcomes !V and provides operational guidance and templates to assist those responsible for evaluations to comply with the Organization!|s evaluation policy. The handbook is divided into two parts: Part One (chapters 1 and 2) covers the definition objectives principles and management of evaluation in WHO. Part Two (chapters 3!V6) provides practical guidance on preparing for and conducting an evaluation detailing the main steps to carrying out a quality evaluation in compliance with WHO!|s evaluation policy (Fig. 1). Annexes provide templates standard documents and a glossary that can be used for the different phases of the evaluation process.