The program evaluation purpose statement is simply a statement of why the evaluation is occurring. The purpose statement usually implies the type of evaluation to be undertaken such as a needs assessment, formative evaluation, summative evaluation, outcome evaluation or even a combination. The purpose statement should also include potential intended uses for the evaluation results. Intended uses may be program improvement, refining outcomes or reporting program impacts. If it is a complex program, it is also helpful to describe which elements are and are not being evaluated and the time frame for the evaluation. All of this helps focus your evaluation process.