S&P Global Ratings assigned its 'AAA/A-1+' rating to Massachusetts Development Finance Agency's $108 million series U-1 (2024) and $108 million series U-2 (2024) revenue bonds issued for Children?s Hospital of Boston (Children's). S&P Global Ratings also assigned its 'AA' underlying rating (SPUR) to Children's as it relates to the joint criteria application on the series U-1 (2024) and U-2 (2024) bonds. The outlook on the long-term ratings is stable. Securing the bonds is a general obligation from the obligated group--of which Children's is the only member--as well as a guarantee from its parent, Children's Medical Center. Nonobligated entities include employed Harvard Medical School and Children's physicians and various support companies, primarily holding real estate. Bond proceeds will be used to