“…Indeed, cooperative structures in the classroom can promote pro-social behavior, sharing of information, and trusting interactions among students (Johnson, 2003; Roseth, Johnson, & Johnson, 2008). Moreover, cooperative classroom environments can enhance the popularity of ethnic minority children (Oortwijn, Boekaerts, Vedder, & Fortuin, 2008) and may also contribute to the development of children’s cross-ethnic friendships (Jugert, Noack, & Rutland, 2011). Extending this work, the present research considers how the perception of cooperation in the classroom contributes to cross-ethnic friendships among children and early adolescents, by examining more specifically whether students who perceive that students in their classroom generally cooperate had more cross-ethnic friendship nominations for shared activities and mutual trust than students who perceived lower levels of cooperation among students in their classroom.…”