The Alaska Statewide Mentor Project (ASMP) is a joint effort of the University of Alaska and the Alaska Department of Education & Early Development to address the persistently low teacher retention rates in the state, especially in rural districts that predominantly serve Alaska Native (AN) students. Over six years, teacher retention in rural districts, measured from year to year, has increased from an average of 67% to an average of 77% among new teachers who receive ASMP mentoring (Adams & Jordan, 2012). We conducted a midcareer teacher study to determine whether ASMP also affects long-term retention and, if so, to identify contributing factors. Using an explanatory sequential mixed-methods approach, we first calculated longitudinal retention rates and then interviewed midcareer teachers to identify factors supporting teacher efficacy connected to teacher retention. Interview data were coded using a framework from community psychology that employs a strengths-based perspective grounded, in this case, by the orienting concepts of "stress" and "coping." The data produced a model of strengths contributing to teacher efficacy related to typical stressors in Alaska's public K-12 schools, a model that includes factors specific to teacher background, professionalism, socializing in the community, and being student-focused. In this paper, we compare and contrast these results to findings by others in northern rural remote areas in order to present practical implications for teacher recruitment, professional development, mentoring and support, and school environment.