The Role of Preschool Peers in Children's Language Development.

Almost 5 million children attend preschool in the United States each year. Recent attention has been paid to the ways in which preschool classrooms shape children's early language development. In this article, we discuss the importance of peers and classroom composition through the lens of age and socioeconomic status and the implications for children's early learning and development. We also discuss the direct and indirect mechanisms through which classroom peers may shape each other's language development. As part of this discussion, we focus on exposure to peer language and engagement with peers, along with teachers' classroom practices. We conclude by discussing the ways in which teachers can ensure that children in classrooms of different compositions reap the maximum benefit, along with implications for research, policy, and practice.