The authors examined whether the adjustment patterns of socially and overtly aggressive preadolescent girls, ages 9 to 11 years, from rural communities differed by ethnicity. Students were administered a series of questionnaires to assess the degree to which girls engaged in various forms of aggression and to assess aggressive girls' social, psychological, and academic functioning. Four clusters of girls--nonaggressive, socially aggressive, and moderate and high mixed aggressive--were identified with cluster analysis based on cross-gendered peer nominations of social and overt aggression. Results indicated that ethnic variation exists in aggressive and nonaggressive girls' attitudes toward school and satisfaction with their friendships, but no ethnic differences were found in aggressive girls' social adjustment. Socially aggressive and nonaggressive African American girls endorsed greater feelings of disengagement from school than socially aggressive and nonaggressive European American girls. No ethnic differences were found in aggressive girls' endorsement of internalizing symptoms. However, both nonaggressive and socially aggressive African American girls reported greater dissatisfaction with their interpersonal relationships than nonaggressive and socially aggressive European American girls. (Contains 3 tables.)