The purpose of this research is to determine how to assess the self-esteem outcome of the work done by Peace Corps Volunteers working with youth participants in Ecuador’s Youth and Families at Risk Program. Through the use of a survey, the following research explores how Peace Corps Volunteers define self-esteem and what factors they describe as indicators of a change in self-esteem. Of the three instruments they reviewed, which instrument was selected as most useful for their work in Ecuador? Lastly, is there a correlation between the types of work done by volunteers and the type of instruments selected by them to assess a change in self-esteem? Three conclusions can be drawn from this research. First, changes in self-esteem can be defined and are easiest to define in work done with groups of people. Secondly, the use of more than one instrument is needed to validate the outcome of self-esteem work and to demonstrate both the self-worth and competency based components of self-esteem. Thirdly, based on findings, Peace Corps Ecuador’s Youth and Families at Risk Program should include the self-evaluation and the observation form in their outcome-based reporting process. PCVs’ selected both of the instruments as most useful to their work.