Reframing High-Quality Public Preschool as a Vehicle for Narrowing Child Health Disparities Based on Family Income.

Past research shows that high-quality public preschool may disproportionately support low-income children's school readiness because low-income children tend to arrive at school with fewer of the academic skills needed for success. This suggests a compensatory process in human development in which the children who benefit most from a promotive factor are those who stand to gain the most. We propose that high-quality public preschool may similarly confer its greatest health rewards to low-income children, who are generally in poorer health than their peers. If that is true, preschool has the potential to narrow health disparities by income, which without intervention, persist into adulthood. To date, no one has articulated all the pathways through which high-quality public preschool may improve children's health, much less those that should disproportionately benefit those from low-income families. Drawing on the bioecological paradigm of human development, we propose a model identifying specific mechanisms likely to promote equity in child health. These mechanisms reflect core characteristics of high-quality public preschool that may disproportionately benefit low-income children's health. This model serves as a working template for a program of future research.