On December 11, 2014, "New America" convened a group of leading experts on dual language learners (DLLs) to launch its new Dual Language Learners National Work Group. The group aimed to address three questions: (1) What are the key best practices for dual language learner instruction, policy, and research?; (2) What are the areas of substantive agreement on best practices? How can we convert this into meaningful policy reform?; and (3) Are there areas where dual language learner stakeholders substantively disagree to such a degree that it impedes progress? This brief offers both a summary of the Work Group's founding event and a rough synthesis of the core messages from the day's discussions. [The New America Education Policy Program's work is made possible through generous grants from the Alliance for Early Success; the Annie E. Casey Foundation; the Bill and Melinda Gates Foundation; the Grable Foundation; the Foundation for Child Development; the Joyce Foundation; the Kresge Foundation; Lumina Foundation; the Pritzker Children's Initiative; the William and Flora Hewlett Foundation; and the W. Clement and Jessie V. Stone Foundation.]