This quantitative correlational-predictive study aimed to determine if and to what extent Secondary Traumatic Stress predicted Intent to Leave when mediated by Resilience in PreK-12 public school teachers certified to teach special education and have been teaching for 1 to 3 years. How the three study variables were correlated has yet to be discovered. The foundation of the study was Drew and Sosnowski's emerging theory of teacher resilience, which included the study variables. The research data was collected using an online survey comprised of three valid and reliable instruments. The research questions asked if Secondary Traumatic Stress statistically significantly predicted Intent to Leave and if Resilience mediated that predictive relationship. Descriptive statistics revealed patterns of included variables. The Hayes PROCESS Matrix Model 4 with Mediation analysis tested the direct and indirect effects. The findings revealed that Secondary Traumatic Stress statistically highly significantly predicted intent to leave [F (1, 99) = 11.926, p < 0.001]. In addition, resilience statistically highly significantly mediated intent to leave, [F (2, 98) = 5.943, p < 0.004]. These results are important for teacher retention. [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://www.proquest.com.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]