This research explores the positive impact of service-learning on the disposition of students in mathematics. This was a qualitative case study of high school AP Statistics students who completed a service-learning project. Data were gathered from student interviews, reflection journals, and field observations. The framework for the analysis follows the definition of "productive disposition" offered by the National Research Council and that remains foundational to the Common Core Standards for Mathematical Practice. The major themes that emerge from the data indicate that through service-learning, students see math as sensible, useful, and worthwhile. This supports the potential of service-learning as a pedagogical tool that can be utilized to develop a productive disposition in students; addressing at a practical level how the affective objectives of national policy documents can be achieved.