AUSTIN, Texas--(BUSINESS WIRE)--Fitch Ratings has affirmed the rating on Tucson Unified School District No. 1, Arizona's (the district) outstanding debt as follows: --approximately $183.6 million unlimited tax general obligation (ULTGO) bonds at 'AA-'. The Rating Outlook is Stable. SECURITY The GO bonds are payable from an unlimited ad valorem tax levied against all taxable property within the district. KEY RATING DRIVERS STABILITY IN RESERVES: Expenditure cuts in operations and facilities have