The early college high school (ECHS) model is a postsecondary attainment strategy with a uniquely robust evidence base of research that demonstrates its effectiveness. Despite the proven track record of success, many states either do not offer ECHS opportunities or have a limited number of programs. However, two states -- North Carolina and Texas -- have created a framework that has allowed for the widespread implementation of the ECHS model. Although the ECHS model is driven by partnerships between district leaders and presidents of institutions of higher education (IHEs), such agreements will only flourish in states where the right policy incentives and structures are in place. In many states, existing policies on dual enrollment funding, educator licensure, or credit transfer may pose barriers to the adoption of ECHS agreements. The Hunt Institute released a series of policy briefs that highlighted scalable state-level strategies to boost postsecondary attainment rates among specific student subpopulations including recent high school graduates, first-generation students, and adult learners. This first issue brief will serve as a guide for policymakers who are interested in identifying factors that may be preventing their state from adopting, strengthening, or scaling the ECHS model. [For the second brief, see ED614429. For the third brief, see ED614426.]