SAN FRANCISCO (Standard&Poor's CreditWire) Jan. 24, 2000--Standard&Poor's today assigned its triple-`A' rating to Southern California Home Financing Authority's (SCHFA) $40 million single-family mortgage revenue bonds series 2000A-1B, issued through the Guaranteed Mortgage Backed Securities Program. The bonds are scheduled to sell Feb. 1, 2000. The rating reflects: -- The extremely high credit quality of the GNMA, Fannie Mae, and FHLMC mortgage-backed securities (MBS): all agencies are considered triple-'A' eligible under Standard&Poor's rating criteria due to direct or implied support from the U.S. Government; -- Triple-'A' rated investments; and -- Cash flow sufficiency. The authority is issuing the bonds under a closed-lien indenture to purchase 30-year, fixed-rate MBS backed by single-family mortgages originated to low-