S&P Global Ratings revised its outlook to negative from stable and affirmed its 'BBB' rating on Cook County Community College District (CCD) No. 508 (City Colleges of Chicago, City Colleges, or the district), Ill.'s outstanding general obligation (GO) bonds. Our outlook revision on City Colleges is based on its relatively high (versus Illinois community college peers) dependence on what we consider unreliable state support for operations and benefits (in fiscal 2019, state appropriations, including other state grants and contracts, constituted 42% of total operating and non-operating revenues), and general enrollment uncertainty stemming from COVID-19. In our view, the district's fairly thin unrestricted reserves provides limited cushion against potential operating and state appropriation variability. Our negative outlook encompasses our view that