Standard&Poor's Ratings Services assigned its 'AAA/A-1' rating to Bear Stearns Municipal Securities Trust Certificates class A certificates series 2006-271, relating to Leander Independent School District (Williamson and Travis Counties, Texas) unlimited tax school building and refunding bonds series 2006. The long-term component of the rating is based on the 'AAA' rated Leander Independent School District (Williamson and Travis Counties, Texas) unlimited tax school building and refunding bonds series 2006. The short-term component of the rating is based on a liquidity facility provided by Bear Stearns Capital Markets Inc. ('NR') with a guarantee provided by The Bear Stearns Cos. Inc. (A/Positive/A-1) scheduled to expire on July 31, 2007.
