A key question in child care policy is whether quality improvement is in tension with maintaining a diverse supply of care that meets working families’ needs. The District of Columbia is an ideal place to explore this question in the context of its redesigned quality rating and improvement system (QRIS), Capital Quality. Capital Quality launched in 2016, was fully implemented by 2018, and made new quality designations public in 2019. This report tracks the supply, distribution, and composition of licensed child care over this period. (author abstract)