This is the report for the fourth survey deployed to capture a snapshot of the impacts of COVID-19 on higher education. It provides updated data for fall course plans, fall calendar start/end plans, course session plans and undergraduate enrollment indicators. In addition, new data is reported on social distancing measures, tuition plans, and perceptions of preparedness for fall overall. The survey was open from Thursday May 14 to Tuesday May 19 at noon and received 376 responses in that timeframe (94% from U.S. institutions). Seven respondents were from online-only institutions and were not asked the questions about fall course delivery and social distancing measures. Other institutional characteristics include: (1) Control; (2) Type; and (3) Size. [For "Impact of COVID-19 on Grading, Transcript and Commencement Practices: Results of the AACRAO COVID-19 Snapshot Impact Survey #1. Amended," see ED606286; "Undergraduate Enrollment Indicators, Impact on Admissions Practice and Fall Course Delivery: Results of the AACRAO COVID-19 Impact Snapshot Survey #2," see ED606287; and "Transfer Credit Evaluation, Official Transcript Receipt & Delivery, Test Score Receipt and Fall Calendar/Sessions Plans: Results of the AACRAO COVID-19 Impact Snapshot Survey #3," see ED606288.]