This case study report is for people interested in funding, managing, forming, or improving community partnerships. It provides an in-depth account of strategies associated with success in Community Collaboratives for Early Learning and Media, or CC-ELM. A national network of thirty CC-ELM--local partnerships among public media stations and organizations such as schools, libraries, afterschool program providers, parent and family advocacy groups, and housing authorities--were developed and implemented between 2015 and 2020 as part of the CPB-PBS Ready To Learn Initiative funded by the U.S. Department of Education. CPB-PBS Ready To Learn Research partners EDC and SRI International completed six case studies as part of their evaluation of CC-ELM implementation and impacts. The report opens with a cross-case analysis that places case study findings in the context of overall evaluation findings; the six case study reports follow, each focused on a single community. The Ready To Learn Initiative is a cooperative agreement funded and managed by the U.S. Department of Education's Office of Elementary and Secondary Education. It supports the development of innovative educational television and digital media targeted to preschool and early elementary school children and their families. Its goal is to promote early learning and school readiness, with a particular interest in reaching children from low-income families. In addition to creating television and other media content, the program supports activities intended to promote national distribution of the programming, effective educational uses of the programming, community-based outreach, and research on educational effectiveness.