DALLAS (Standard&Poor's) May 2, 2008--Standard&Poor's Ratings Services raised its standard long-term rating on Canadian County Independent School District No. 69 (Mustang School District), Okla.'s general obligation (GO) bonds to 'AA-' from 'A+' based on the district's manageable capital improvement plan (CIP), despite enrollment pressures. The outlook is stable. At the same time, Standard&Poor's assigned its 'AA-' standard long-term rating, and stable outlook, to the district's $3.84 million series 2008 GO refunding bonds. The rating reflects the district's inclusion in the diverse Oklahoma City, Okla., metropolitan statistical area (MSA) regional economy, coupled with sustained strong district property tax base growth; above-average wealth and income; low overall debt levels, coupled with a rapid five-year principal amortization