In California, as in many other states across the nation, implementing the Common Core State Standards (CCSS) has been a complex endeavor impacting every public school educator. Not surprisingly, California districts have encountered bumps along the way in their efforts to provide much-needed support to all K-12 teachers as they continue to learn how to teach to the rigorous standards, which are now also known as the California (CA) Standards within the Golden State. In this final installment of a three-part "CenterView" series on how California districts are faring with implementing state standards, the Center for the Future of Teaching & Learning (The Center) reports on the challenges of identifying quality instructional resources and providing effective professional learning, amidst ongoing barriers to funding, time, and teacher availability. This issue concludes with action steps that service providers can take to help districts address barriers in the way of effectively advancing implementation of the standards. [For the first installment in this series, see ED568371. For the second installment, see ED582969.]