Types of EvaluationThere are three basic types of evaluation:
- Process evaluation
- Outcome evaluation
- Legacy (post-program) evaluation
- Inputs—how resources are being used
- Outputs—how well activities are carried out and whether they involve and reach the intended audience
In contrast, an outcome evaluation generally asks "did it work?" It is used to determine whether things worked as planned and whether changes can be attributed to the program's activities. Assessments of a program's efficiency or cost-effectiveness compared to outcomes are also types of outcome evaluations.
A legacy evaluation takes place after a program has finished. It is used to determine the program's long-term outcomes or ultimate impact—such as changes in health status—which may not be detectable until a program has been around for a while or has ended.