In Spring 2020, National Association of Charter School Authorizers (NACSA) convened a working group of authorizers and other stakeholders to learn more about the challenges they faced, given the data gaps caused by COVID-19, and to ask what guidance was needed for the sector to adapt to these unusual circumstances. Based on their feedback and insights, NACSA created this guide to support authorizers as they reflect on these challenges and opportunities. This guide is meant to help authorizers gain context and spur thinking on what it means right now for authorizers to maintain high standards of accountability, regardless of the data gaps. [For the accompanying toolkit, "A Guide for School Districts: Exploring Alternative Measures of Student Learning and Wellness," see ED610389.]