This study, The market for quality child care: Supply, demand and quality rating and improvement systems (QRIS), will draw on several data sources, including the National Survey of Early Care & Education (NSECE), to explore whether QRIS are promoting fair and equal access to high quality care. Specifically, the aims of the study are to examine how cross-state variation in the structure of QRIS (e.g., financial incentives offered to providers, methods used to promote public awareness of QRIS to parents) relates to: (1) the supply of quality early care and education, and (2) parents' demand for quality early care and education. The study will also examine whether the supply of and parental demand for early care and education operate similarly or differently based on individual- and community-level characteristics (e.g., proportion of children who are low income, the density of minority and/or immigrant families). The study team includes Dr. Erin Bumgarner and Dr. Michael Lopez (PIs), Dr. Todd Grindal (Director of Analysis), along with independent consultants, Dr. Lisa Gennetian (New York University), Dr. Sharon Lynn Kagan (Columbia University), and Dr. Terri Sabol (Northwestern University).