The'A'rating on Will County School District No. 81 (Union), Ill.'s series 2008A general obligation (GO) alternate revenue source school bonds and series 2008B GO alternate revenue source capital appreciation school bonds reflects the district's: Participation in the Chicago metropolitan area's deep and diverse economy along with immediate access to the city of Joliet's large local job base, Strong income levels, Growing tax base due mostly to industrial development, and Moderate overall debt burden. The district's small amount of reserves on a cash basis of accounting, although good as a percent of expenditures, is a limiting rating factor. The district's pledge of taxes, grants, state aid, interest earnings, and other revenues received and available to be used for the