Standard&Poor's Ratings Services raised its long-term rating and underlying rating (SPUR) rating to 'A+' from 'A' on Vista Unified School District, Calif.'s general obligation (GO) bonds. At the same time, Standard&Poor's raised its rating to 'A' from 'A-' on the District's certificates of participation (COPs). The outlook is stable. The upgrades reflect our view of the district's: Primarily residential community with access to the broader San Diego and Orange, Calif., metropolitan areas; Expanding and diverse property tax base; Improved financial position, coupled with a strong unreserved fund balance of 22% of expenditures in fiscal 2009; and Relatively low overall debt burden with limited capital needs. However, the district has faced some recent operating pressure in the