A triangulation mixed-methods design was used to measure differences in service-learning outcomes for 32 students enrolled in criminal justice courses during the academic years 2003 (n = 16) and 2005 (n = 16). Results show that service-learners increase their political awareness and course value but experience a decrease in problem-solving skills and preference for short-term and long-term participation in service projects over the course of the semester. Results further indicate that service-learning impacts the majority of students' attitudes regarding diversity, as well as their interpersonal, personal, and intellectual development. (Contains 1 table.)