The rating on Johnson County Unified School District No. 231, Kan.'s bonds reflects the unlimited GO pledge of the district, supported by: An expanding local economy participating in the broad and diverse Kansas City MSA, High income levels, Adequate financial position given the state educational funding system, and A high debt burden with further capital needs. Located in northeastern Kansas, the district serves the cities of Gardner, Edgerton, Antioch, and unincorporated areas of Johnson and Miami counties. District population has doubled in the past decade to a current level of 16,635, anchored by employment at Sprint's Kansas City headquarters and related telecommunication equipment facilities in the county. The market value of taxable property has risen as well, up 170% since