Standard&Poor's Ratings Services assigned its 'A-' rating to Johnson County Unified School District No. 231, Kan.'s series 2006A GO school bonds. Standard&Poor's also affirmed its 'A-' underlying rating (SPUR) on the district's GO debt outstanding. The ratings reflect the district's: Expanding local economy, which participates in the broad and diverse Kansas City MSA; Healthy assessed valuation (AV) growth; Above-average income levels; and Adequate financial position given the state educational funding system. Offsetting factors include the district's: Above average taxpayer concentration; and High debt burden, coupled with further enrollment-driven capital needs. The district's full faith and credit pledge secures the series 2006A bonds. Located in northeastern Kansas, Johnson County Unified School District No. 231 serves Gardner, Edgerton,