Twenty African American and European American mothers of fourth-grade students reflected on strategies for managing children's friendships maintained across a variety of contexts. Ethnicity differentially located families within specific social contexts that yielded children's friendships, then informed social processes as they unfolded within these contexts. Maternal knowledge concerning children's friendships developed as a function of the types of relationships formed among parents encountered within different settings. Findings suggest that interparental relationships represent a key source of information about children's friendships. Yet, maternal opportunities to establish such relationships differ on the basis of both ethnicity and the nature of contexts in which children's friendships are maintained.