This is a comprehensive analytic report in the "School District Responses to the COVID-19 Pandemic" series, covering changes that occurred in public school districts across six waves of data collection, from March 26 to May 29, 2020. American Enterprise Institute's (AEI's) COVID-19 Education Response Longitudinal Survey (C-ERLS) conducted six waves of data collection to provide timely, descriptive snapshots of the nations' school districts. Building on that descriptive work from the spring, this report presents new analyses made possible by adding several other data sources to the six waves of C-ERLS data. This report presents three main sets of findings. The first section examines total instructional time lost during the spring--losses that were much greater in high-poverty schools. The second section looks at how remote-learning offerings differed across districts' student demographics. The final section examines the broader contexts influencing school districts' offerings.