The purpose of the study was to determine whether the study of diversity topics embedded in a Principal Preparation Program (PPP) internship changed candidates' self-awareness of their biases in educational environments and the biases they observed in their school community. In this study PPP candidates' perceptions of their biases and those of their schools were assessed at the beginning and end of the internship. The Anti-Defamation League's (ADL), Assessing Yourself and Your School Checklist, were utilized to obtain candidates self-perceptions. Throughout the internship monthly learning activities, PPP candidates studied various diversity topics that impact schools. Descriptive statistics were utilized to complete a pretest-posttest comparison to determine any changes toward their biases. The findings of this study demonstrated that diversity topics embedded in an PPP internship increased candidates' self-awareness of their personal biases in educational environments and the biases they observe in their school community. The study of diversity topics broadened PPP candidates' awareness of the challenges faced by groups and individuals in their school communities.