In this paper, we explore cross-sector QRIS, which we define as QRIS that are inclusive of child care and pre-K programs. The paper aims to support policymakers and advocates as they examine their existing approaches and strive to increase coherence, effectiveness and equity. Our analysis draws from reviews of several summative resources that describe current QRIS and pre-K approaches, including the QRIS Compendium and the National Institute for Early Education Research (NIEER) State Preschool Yearbook as well as discussions with several QRIS administrators who lead cross-sector QRIS. We begin with a discussion of the history of the ECE system that has propelled QRIS and pre-K. We describe several common dimensions of QRIS and pre-K and explore the implications of taking an approach in which QRIS fully embraces both child care and pre-K. The paper shares QRIS models that include pre-K and the trade-offs inherent in each approach. Our paper concludes with a discussion of strategies for continued efforts to implement pre-K and QRIS within a coherent ECE systems-building approach. (author abstract)