Educators and students in schools across the United States have faced sweeping, unprecedented changes to teaching and learning as a result of the coronavirus disease 2019 (COVID-19) pandemic, which shuttered school buildings in spring 2020. This Data Note offers teachers' and principals' perspectives on some of those changes and presents their implications for education policymakers and practitioners. Drawing on the RAND Corporation's American Educator Panels (AEP), researchers surveyed nationally representative samples of K-12 public school teachers and principals in late April and early May 2020 to document how they delivered instruction and other services, what supports and resources they needed, and what their expected priorities and plans were for the 2020-2021 school year. At the time the survey was fielded, the effects of the pandemic were already in full force: According to the principals and teachers surveyed, most K-12 public schools in the United States closed during the two-week period in the latter part of March. However, nearly all the teachers who responded to the surveys reported being employed and paid for the same number of hours as before school closures. The following key topics are addressed: (1) distance learning and curriculum coverage during school closures; (2) principals' perceptions of school challenges and needs; (3) school and teacher contact with families and students; (4) teacher training on remote instruction; (5) teachers' needs for additional support; and (6) priorities and plans for the summer and next school year. To capture potential inequities and the various responses to school closures, differences for several teacher and principal subgroups were examined. Results for principals and teachers serving elementary versus secondary grade levels were examined, and comparisons using several school-level variables, including school urbanicity, school racial/ethnic composition, and school poverty (based on student eligibility for free or reduced-price meals) were conducted. [For a related report, "COVID-19 and the State of K-12 Schools: Results and Technical Documentation from the Spring 2020 American Educator Panels COVID-19 Surveys," see ED605373.]