Standard&Poor's Ratings Services assigned its 'A' issuer credit rating, 'A' rating, and stable outlook, to Leander Independent School District, Texas' series 2006 unlimited-tax GO school building and refunding bonds. The 'A' rating reflects the district's: Participation in the rapidly growing Austin MSA economy, which provides significant employment opportunities; Continued expansion of the sizable property tax base, supported by households with above-average incomes; and Consistently strong financial performance, coupled with the maintenance of sound reserves, despite continued growth pressures. Constraining these credit strengths include: A very high overall debt burden, coupled with future capital needs to support considerable student enrollment growth, and High carrying charges and below-average debt service amortization. The district's full faith and credit pledge secures the