In this mixed-methods study, the effect of training teacher-researchers in a collaborative research environment is examined for a cohort of teachers enrolled in a Math and Science Partnership (MSP) master's degree program. The teachers describe changes in their research views and in their application of research in practice, and detail the challenges they faced during the process. The findings of the study suggest training teachers as researchers is likely to encourage teacher interest in conducting and applying theory in math and science classrooms. The results of this study have implications for bridging the gap between theory and practice in math and science education in general.