A preschool child who is healthy and ready to learn demonstrates the ability to regulate their behavior and emotions, key social and emotional competencies, motor skills, health, and early learning skills. Because healthy development across these domains is more challenging for some children than for others, it is valuable to understand which experiences during the preschool years are associated with children's health and readiness for school. The analyses in this brief examine the associations between a young child's experiences and the extent to which parents report that the child is healthy and ready to learn. Data used for these analyses are from the 2017 and 2018 waves of the Health Resources and Services Administration's (HRSA) National Survey of Children's Health (NSCH) for children ages 3 to 5, and are nationally representative of children in this age range. Key findings include: (1) Children's experiences and routines are associated with being healthy and ready to learn; (2) Adverse experiences and health conditions relate to being healthy and ready to learn, as expected; and (3) Individuals, systems, and policies play a role in children's health and readiness for school.