Compared to school violence among students, little is known about violence against teachers. To determine the magnitude of physical assault (PA) and non-physical violence (NPV) and risk factors for PA in randomly selected state-licensed, working kindergarten-grade 12 educators (n ¼ 6469), a two-phase study was implemented: Phase 1 (mailed 12-month retrospective survey) collected demographics, personal characteristics, and violent occurrences and consequences; Phase 2 (mailed case- control survey) collected exposures: activities, others in the environment, school infrastructure and administration, and community socioeconomic status. Cases (395) reporting at least one PA are questioned about exposures in the month before and during the incident; controls (1185), are questioned about exposures on a randomly selected working month from all months during the study period, before any reported PA. We select potentially confounding variables for multiple logistic regression from directed acyclic graphs and re-weight to adjust for potential non-response and unknown eligibility biases. From initial results (78% response), rates per 100 persons per year were: PA, 8; NPV overall, 35; NPV subcategories of threat, 16; verbal abuse, 29; harassment, 3; bullying, 9. Perpetrators were: students, colleagues, parents. Consequences of PA and NPV, respectively, include treatment: 21%, 9%-18%; restricted activity: 12%, 12%-19%; change in work status: 11%, 15%-28%; highest percentages were for bullying. Many teachers experience violence, with serious consequences. Identifying associated risk factors is integral to intervention development.