How do I learn about Clinical Learning Environment Review (CLER) blackout weeks? February 10, 2020 18:39 Updated Visit the CLER Site Visit page on the ACGME website. Related articles How do I learn about the Clinical Learning Environment Review (CLER)? What changes require Designated Institutional Official (DIO)/ACGME approval? Where can I learn about the CLER site visiting team? Who can see Resident/Fellow Survey data? How do I add a new Resident/Fellow in ADS?