An important goal of early childhood education is teaching emotional self-regulation within the context of a safe, stable, nurturing environment. Expulsion of young children ignores underlying emotional and behavioral concerns, disproportionately affects children of color (Black or Hispanic), males, children with disabilities, and socioeconomically disadvantaged populations, and has long-term consequences on educational and life success. Addressing implicit bias and providing child mental health consultation (psychologists, social workers, developmental behavioral pediatricians, child psychiatrists, and child neurologists) to child care providers can prevent expulsion. Pediatricians and other providers within the medical home play an important part in preventing expulsion. However, pediatricians need more training in early childhood mental health and in understanding how systemic racism and implicit bias lead to preschool expulsion in children of color. By identifying children at risk for expulsion because of poverty, racial discrimination, toxic stress, insecure attachment, or history of trauma, the pediatrician can connect families with community resources that may ameliorate these effects. Pediatricians can provide information on social-emotional development in early childhood, promote positive parent-child relationships, and model and discuss age-appropriate and developmentally appropriate behavior management. Pediatricians can also guide parents toward high-quality child care programs that use mental health consultation and developmentally appropriate activities, both of which lessen the chance of child expulsion. Furthermore, behavioral health providers integrated into the medical home can provide consultation to child care providers on managing patients. These recommendations are consistent with our knowledge of early child brain development and support the current tenets of the American Academy of Pediatrics regarding the pediatrician’s role in building resilience and buffering toxic stress to promote optimal child development.