Prop 205 would allow adults 21 and older to possess limited amounts of marijuana; establish a system in which marijuana is regulated similarly to alcohol; and enact a 15 percent tax on retail marijuana sales, from which a majority of the revenue would be directed to Arizona schools and education programs. The Arizona Joint Legislative Budget Committee estimated the initiative would generate more than $123 million in annual tax revenue and license fees by 2020, including more than $55 million per year for K-12 education and full-day kindergarten programs.

The Campaign to Regulate Marijuana Like Alcohol made the announcement at a press conference on Thursday.