Ariz. Rev. Stat. § 42-17151
A. On or before the third Monday in August each year, the governing body of each county, city, town, community college district and school district shall:
C. The governing board of a common school district, a high school district or a unified school district shall not fix, levy or assess a primary property tax rate higher than the current year's rate if the district meets both of the following criteria, as determined by the property tax oversight commission: