Many Physician Assistant (PA) students experience mistreatment including public humiliation, preferential grading, discriminatory statements, physical assault, and sexual harassment. Mistreatment is disruptive to learning and has negative professional and personal impact on students. Mistreatment is most common in clinical settings, most often performed by preceptors who supervise students' clinical learning, and most often not reported by students to their institution. Student underreporting limits programs' ability to address mistreatment and support students. This study used a non-experimental, cross-sectional, predictive research design with quantitative analytic methods. Data was from two national surveys administered to PA students and programs in 2019. The sample of analysis was PA students who experienced mistreatment performed by preceptors. The dependent variable was student mistreatment reporting behavior to their institution. Descriptive statistics summarized institution characteristics, student demographics, program mistreatment policy, and type of mistreatment. Multiple logistic regression was used to determine the percent of variance in the dependent variable accounted for by the linear combination of independent variables and to identify which independent variables were significant predictors of increased student mistreatment reporting to their institution. The two significant predictors of increased student mistreatment reporting to their institution were mistreatment involving physical or sexual behavior and student age. These findings have implications for PA program policy design, implementation, and evaluation. Future research is needed to identify other predictive factors and provide explanations of how those factors facilitate or hinder PA student mistreatment reporting behavior. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]