Learning Forward is excited to announce that our body of work advancing curriculum-based professional learning is one anchor of a new position paper published by the Research Partnership for Professional Learning (RPPL). Defining Curriculum-Based Professional Learning: Building a Common Language was collaboratively developed by six organizations to fill a gap in the field’s collective knowledge about and understanding of curriculum-based professional learning. A growing number of school systems are adopting and implementing high-quality instructional materials with high expectations for student learning, but many are lacking the necessary professional learning supports to implement them well. This position paper provides clarity about the kinds of supports that work. Learning Forward, The Learning Policy Institute, The National Implementation Research Network, Rivet Education, and the Annenberg Institute at Brown University partnered with RPPL, contributing expertise to create a resource designed to elevate, define, and describe core features of instructionally focused professional learning and ensure that everyone working in teacher professional learning shares a common understanding and application of these core aspects. Read the paper at learningforward.org/research-reports.