California is on the cusp of implementing universal preschool--a step that could help level the playing eld for young children. Over the next few years, all four-year-olds will become eligible for Transitional Kindergarten (TK), which has been part of the state's early learning programs since 2012. In this report, the authors examine the demographic characteristics of current students and the characteristics of the districts and schools offering TK in order to understand whether TK is currently being provided in an equitable manner. Specifically, the authors ask if dual language learners, students from families eligible for free and reduced-price meals (FRPM eligible, a proxy for low income), and students of color participate in TK in the numbers we expect given their age eligibility. The authors then provide recommendations for the state as it moves forward with expanding TK to help the program achieve true universal access and meet the goal of narrowing gaps in school readiness. [For the technical appendices, see ED623792. For the policy brief, see ED623793.]