Unsurprisingly, the proliferation of statewide school choice policies has resulted in increased student use. Most research on school choice policies examines the policies’ effects on student outcomes. However, the policies are not uniform in design or in student take-up rates. Our team’s exploratory study tracked initial enrollment rates in nearly all the existing school choice programs to identify the impact of specific design features on take-up rates in school choice initiatives, analyzing them through an economic market-based framework, from the demand side. We measured specific policy design elements to assess whether they determined enrollment rates. We also analyzed relevant state conditions for their impact on choice take-up rates.