Standard&Poor's Ratings Services assigned its 'AAA' long-term rating to the Massachusetts Institute of Technology (MIT) approximately $525 million series D-1 and D-2 taxable general obligation (GO) refunding bonds. In addition, Standard&Poor's affirmed its 'AAA' long-term rating and 'AAA/A-1+' rating on MIT's existing debt, some of which was issued by the Massachusetts Development Finance Agency (formerly known as the Massachusetts Health and Educational Facilities Authority). The outlook on all ratings is stable. The 'AAA' rating reflects our view of MIT's substantial endowment, incredible demand for its programs, growth in research, and consistently strong operating performance. This offsets our view of the Institute's lower-than-average financial resource ratios compared with the 'AAA' category and accelerated debt issuance compared to