Standard&Poor's Ratings Services affirmed its 'A+' rating on the New York State Dormitory Authority's series 2004A school district revenue bond financing program revenue bonds. The outlook is stable. The bonds are secured by payments from a pool of school districts, which pay debt service on a weak link basis. The rating is based on statutory provisions provided by section 99-b of the New York State Local Finance Law. This statute allows for the withholding of state aid due to the school district if the district does not make timely debt service payments. Standard&Poor's has historically treated the statutory provision as a credit enhancement. If a school district has adequate state aid coverage of debt service, it