Teachers have faced unrelenting stress in recent years, especially since 2020. In addition to the COVID-19 pandemic, the preeminence of racial injustice has resurfaced. In this context, teachers are processing acute societal-level stressors while simultaneously supporting their students in processing these events. Although emerging scholarship has described the negative consequences of the pandemic for teachers (e.g., Hanno et al., 2020), few studies have examined the elevated visibility of societal racial injustice as a potential source of stress for teachers. There is a dearth of research that examines whether and how racism functions as a stressor in teachers' lives, despite compelling evidence that racism has negative mental health consequences for individuals of all racial-ethnic backgrounds. The goals of this dissertation are to (a) describe the types and extent of racism-related stressors that teachers experience both inside and outside of school, (b) examine the linkages between these racism-related stressors and teachers' perceptions of stress, and (c) examine what resources teachers draw on to attenuate stress. Survey data were collected from a diverse sample of 163 elementary school teachers in 36 states across the country, and semi-structured interviews were conducted with a subsample of these survey participants. Findings indicate that perceptions of racism in society have real-time implications for teachers' stress, and that school-wide racial bias and racial concerns in the classroom also contribute to teachers' perceived stress. Social support both in and out of the classroom are important moderators of the association of racism-related stressors with perceived stress. Implications for practitioners and policymakers are discussed. [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.]