In education, it is common to set aside older curriculum documents when newer ones are released. In fact, some instructional leaders have encouraged the "out with the old, in with the new" process by asking teachers to turn in all copies of the older document. Doing so makes sense when the old curriculum document is incompatible with the new. However, when the two documents are complementary, a great deal can be lost by discarding the older curriculum. At this writing, the Common Core State Standards for Mathematics (CCSSM) themselves are new, influential, national curriculum guidelines. Although these standards will replace many current state requirements, some older curriculum documents are useful for helping to implement CCSSM and other middle school curricula. The GAISE report ("Guidelines for Assessment and Instruction in Statistics Education Report: A Pre-K-12 Curriculum Framework"), for example, contains valuable insight about teaching and learning the statistical content prescribed in CCSSM. This document, endorsed by the American Statistical Association, provides a framework for students' learning progressions that aligns well with CCSSM. CCSSM places a large amount of statistics content in the middle grades, thus charging middle school teachers with the responsibility of delivering a major portion of students' statistics education. In this article, the authors explain how GAISE is an important tool for practitioners who are working to implement CCSSM for statistics and probability in grades 6-8. (Contains 4 figures.)