Drawing from social–ecological systems theory, the authors argue that -current research on childhood bullying would benefit from analyses that consider the -mesosystem—specifically, how teacher–student relationships can influence -children's bullying experiences. The authors provide two theoretical conceptions for how children's peer interactions are implicitly shaped by teacher–student relationship quality: attachment and social referral. Implications for practice, with an emphasis on developing teachers' social–emotional competencies to strengthen positive teacher–student relationships, are proposed.