In this study the authors explored the social inclusiveness of classrooms with culturally competent teachers who were identified both by their participation in in-service diversity training and by principal nomination. The design of this study is quantitative, using a one-way ANOVA to analyze whether students (N = 125) in classrooms with teachers identified as culturally competent are more inclusive in their mutual friendships than students (N = 117) in classrooms with untrained teachers at the same schools. Sociometric questionnaires were used to collect data on mutual friendships. In the social psychological research mutual friendships are considered to be a strong indicator of less social distance between diverse social groups. Findings from the sociometric questionnaire suggest that students with culturally competent teachers, also referred to as culturally responsive teachers in the literature, have broader and more diverse social networks than students in classrooms with teachers that were not trained.