SAN FRANCISCO (Standard&Poor's CreditWire) July 25, 2000--Standard&Poor's today assigned its single-'A'-minus rating to West Contra Costa Unified School District, Calif.'s $10 million GO bonds series D, authorized by the election of 1998. The bonds are scheduled to sell July 26, 2000. In addition, Standard&Poor's assigned its single-'A'-minus underlying rating (SPUR) to the district's GO bonds series C, also authorized by the election of 1998. The outlook is stable. The rating reflects: -- Continued stable financial performance and recovery from the district's financial mismanagement in the early 1990s, -- Steady improvements in reserve levels, and -- Below-average total overlapping debt levels. Offsetting credit concerns include a potential $8.6 million liability due to the state as