Standard&Poor's Ratings Services revised the outlook to positive from stable and affirmed its 'A+' long-term rating and underlying rating (SPUR) on West Contra Costa Unified School District, Calif.'s general obligation (GO) bonds outstanding based on our view of the district's maintenance of strong unrestricted reserves during recent declines in state funding and budgeted reserves that remain strong. At the same time, Standard&Poor's assigned its 'A+' rating to the district's series A (election of 2012) GO bonds and series B (election of 2010) GO bonds. The ratings reflect our opinion of the district's: Participation in the San Francisco Bay Area economy, which provides diverse employment opportunities; Very strong per capita market values despite some tax base volatility