This report is structured in chapters that address each of the four primary research topics identified above. Each chapter provides an overview of the purpose of the chapter, a brief description of the methods used for data collection, a summary of key findings, and a summary and considerations for next steps. After the background chapter, which provides an overview of the Colorado Shines rating structure, the first chapter reports on the strategies that have been used to recruit Colorado Shines participation and the extent of any perceived successes or challenges with these approaches. The second chapter shares perceptions of Colorado Shines from the perspective of center directors and family child care home providers. The third chapter reports on the perceptions of the quality improvement supports from the perspective of center directors, family child care providers, coaches, QI navigators, and Early Childhood Councils. The fourth chapter explores several aspects of the Colorado Shines rating structure and process, and reports on the observed differences in quality among a sample of approximately 300 Colorado Shines classrooms. The end of the report includes a discussion of limitations and provides an overall summary of key findings and recommendations for next steps. A detailed discussion of methods can be found in the Appendix. (author abstract)