An examination of how well market rate surveys assess the price of care in various types of communities, what methods validate market rate survey findings, and the effects of child care subsidies on the larger child care market. Multiple data sources and data collection methods are used to assess validity, market representation, and cost effectiveness of market prices, including surveys of States, territories, and tribes to assess current market rate survey practices and issues, and child care administrative data, census data, and employment data to explore the relationship between child care subsidies and the price of care. The project provides knowledge needed to improve the effectiveness and efficiency of surveys whose findings guide a major investment in America's children and families.