Standard&Poor's Ratings Services assigned its 'A+' long-term rating to West Contra Costa Unified School District, Calif.'s 2015 series C (election of 2010) and 2015 series B (election of 2012) general obligation (GO) bonds. At the same time, Standard&Poor's affirmed its 'A+' long-term rating and underlying rating (SPUR) on the district's existing GO bonds. The outlook is stable. The ratings reflect our opinion of the district's: Participation in the San Francisco Bay Area economy, which provides residents with diverse employment opportunities; Very strong per capita market values, despite some tax base volatility related to Chevron, the top taxpayer; and Additional revenue flexibility provided through a five-year voter-approved parcel tax and a perpetual special assessment. Partially offsetting the
