A comprehensive view of the number and characteristics of children under 15 years old in different types of child care arrangements in the United States in the spring of 2005 and the summer of 2006, with comparisons of respective child care types used for each age group, information about child care cost and the number of fathers providing care, and an examination of topics such as summer child care arrangements for both preschoolers and gradeschoolers, based on data from the nationally representative Survey of Income and Program Participation (SIPP) 2004 Panel