A survey administered in the spring of 2013 by the Center on Education Policy (CEP) inquired into the implementation of Common Core State Standards at that time. Based on self-reports by state officials, the survey found that curricula aligned to the common core were already being taught in at least some districts or grade levels. All states surveyed had developed and disseminated plans for implementation and nearly all had conducted analyses comparing the common core standards to previous state standards. While state-level efforts are under way, national organizations and firms are also engaged in developing materials and preparing educators to revamp instruction and supervision around the common core standards. The fact that the standards have been adopted by so many states makes possible cross state partnerships that could not have taken place when each state developed its own standards. Publishers are also moving to develop new materials based on the standards. One of the largest such efforts is being undertaken by Pearson, a major publisher based in London. With input from members of teams that wrote the standards, Pearson is creating a series of K-12 curriculum materials that will be delivered completely online, through tablets like the iPad. They will include projects for students to complete, texts and digital materials to support students in conducting their projects, and assessments to check student understanding. The true test of the Common Core State Standards Initiative, and of public support for it, will come over the next few years, as states carry through with their implementation plans. Despite the challenges, states and districts are attempting to make it happen in tens of thousands of schools across the country.