Although medical education has long recognized the importance of community service, most medical schools have not formally nor fully incorporated service learning into their curricula. To address this problem, we describe the initial design, development, implementation, and evaluation of a service-learning project within a first-year medical school course. Medical students (eight women, eight men) screened clients of a community agency for high blood pressure and educated them about the effects of hypertension on health. Results of the project indicated significant increases in students' attitudes, knowledge, and skills related to community health, resources, and service. Infusing medical education with service-learning activities can both meet community needs and enhance student education about the health of the public. The present findings support continued development and evaluation of service learning projects within medical school training programs. (Contains 1 table.)