Standard&Poor's Ratings Services raised its long-term rating and underlying rating (SPUR) rating to 'AA-' from 'A+' on Vista Unified School District, Calif.'s general obligation (GO) bonds. At the same time, Standard&Poor's raised its long-term rating to 'A+' from 'A' on the district's existing certificates of participation (COPs). The raised ratings reflect our view of the district's consistently very strong finances in recent years. The outlook on all ratings is stable. The ratings further reflect our view of the district's: Primarily residential community with access to the broader San Diego and Orange metropolitan areas; Strong income indicators on a household basis, and very strong wealth levels; Expanding and diverse property tax base; and Low to moderate overall