NEW YORK (Standard&Poor's) May 6, 2011--Standard&Poor's Ratings Services has assigned its 'AAA' long-term rating on up to $750 million MIT taxable series B revenue bonds, to be issued by Massachusetts Institute of Technology (MIT). Standard&Poor's also affirmed its 'AAA' and 'A-1+' long- and short-term ratings on debt previously issued for and by MIT. The ratings reflect Standard&Poor's view of MIT's unconditional unsecured general obligation pledge, supported by the organization's status as a preeminent research institute, strong financial resources, and significant demand, excellent student quality, and increasingly competitive admissions. Additional credit factors considered by Standard&Poor's include MIT's strong operating performance, supported by good revenue diversity, a demonstrated ability to raise funds,