This project addresses critical gaps in knowledge about what quality looks like in nontraditional hour (NTH) childcare, the experiences of families who search for and use NTH childcare, the lived experiences of providers who offer care during these hours, and the types of supports needed to maintain, sustain, and grow its supply. The knowledge gathered will provide Illinois’ Child Care and Development Fund (CCDF) lead agency and the field with new knowledge to inform policy development aimed at building supply and increasing equitable access, enhancing quality, and sustaining a thriving NTH workforce. (author abstract)