There are many interrelated aspects of children's well-being. This report identifies seven major domains that characterize the well- being of a child and influence the likelihood that a child will grow to be a well-educated, economically secure, productive, and healthy adult. The seven domains are family and social environment; economic circumstances; health care; physical environment and safety; behavior; education; and health. These domains are interrelated and can have synergistic effects on well-being.

Each section of the report corresponds to one of the seven domains and includes a set of key national indicators. These indicators either characterize an aspect of well-being or an influence on well-being.

• Family and Social Environment includes indicators that characterize children's family lives and social settings.
• Economic Circumstances includes indicators related to children's basic material needs.
• Health Care includes indicators that characterize access to and use of health services among children.
• Physical Environment and Safety includes indicators that characterize children's environmental conditions or are related to children's safety.
• Behavior includes indicators that characterize personal behaviors and their effects.
• Education includes indicators that characterize how children learn and progress in school.
• Health includes indicators that characterize the physical, mental, and social aspects of children's health.