It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
Childstats.gov: Forum on Child and Family Statisticsprovides "access to statistics and reports on children and families, including: family and social environment, economic circumstances, health care, physical environment and safety, behavior, education and health".