Little is known about the use of service learning in public health education and appropriate methods for assessing whether it results in students' improved abilities to think critically about public health practice. The purpose of this poster is to present the results of a study designed to determine whether Photovoice is a feasible and valid approach to assessing the effects of service learning on master's level community health students' ability to think critically about public health practice. A case study of students engaged in public health practice as a component of a master's level community health course (Community Health Assessment) will serve as the backdrop for the presentation.