Purpose: Significant differences exist in the racial composition of America's student and teacher populations. This reality is compounded by the racial re-segregation patterns affecting many schools and systems in the USA. These trends make it increasingly less likely that educators encounter racial diversity during their experiences as K-12 students and more likely that they encounter racial diversity as educators. This paper aims to present the results of a study designed to explore the consequences of this reality on those educators' abilities to successfully reach their students? Design/methodology/approach: The present study used a quantitative exploratory design. Data were analyzed to determine if educators' experiences as K-12 students affected their present self-efficacy for teaching in diverse classrooms, their self-efficacy for using culturally responsive techniques, and their confidence in the merits of deploying these approaches in classrooms. Findings: Data from the present study suggest that educators whose school experiences included significant interactions in racially diverse settings are significantly more likely to possess a higher level of self-efficacy than those who do not. Originality/value This study illuminates an unexplored consequence of school resegregation and lends support for efforts to diversify the teaching force and resist school resegregation.