Standards-based learning just got a lot easier This new version of The Common Core Companion provides an index for all states implementing state-specific ELA standards. This index allows you to see in an instant which of your standards are the same as CCSS, which differ and how-and which page number to turn to for standards-based teaching ideas. Beyond that? It's the same great go-to guide for implementing the standards into daily practice across English Language Arts, Social Studies, Science, and Technical Subjects.