Purpose: The purpose of this research was to assess the knowledge, attitudes and practices of both students and older adults that participated in a service-learning, environmental health education program called Recycling Mentors (RM). Methods: Surveys were conducted before and after participation in RM. Quantitative data were analyzed using SPSS. Specifically, means and standard deviations were calculated for all items excluding demographics. Paired sample t-tests were conducted for student data while two-way ANOVAs were conducted for the older adult data. Results: Pre/post surveys indicated older adult interaction effects were observed for several behaviors: recycling glass and cans outside the home and recycling cans inside the home. Students showed significant increases in the frequency of recycling behaviors for all recyclable items both inside and outside of the home, but no significant knowledge or attitude changes were revealed. Regardless of whether participants were in the intervention or control group, older adults' recycling knowledge increased. This increase likely indicates general raised awareness about recycling for older adults that could have occurred from completing assessments, interactions with students or self-directed learning. Conclusions: Environmentally themed programs like RM seem to be mutually beneficial to students, older adults and the community. Students gained practical experience facilitating a community education program. Both older adults and students changed behaviors that will have a positive impact on the community and environment. Recommendations: Service-learning programs like RM provide excellent opportunities for colleges and universities to serve the community. While RM was successful, additional research is needed to identify ways to promote recycling among people of all ages.