Given the increasing ethnic and language diversity within the United States, this study examined practices that acknowledge and promote diversity in pre-Kindergarten classrooms. Findings indicate that acceptance of diversity is a component of positive environments for young children, particularly in classrooms with high poverty levels where there is ethnic and linguistic diversity. [This research brief is based on the following published study: Sanders, K. & Downer, J. T. (2012). Predicting acceptance of diversity in pre-Kindergarten classrooms. "Early Childhood Research Quarterly," 27(3), 503-511. (EJ974457)]