In 2009, NSDC released Professional Learning in the Learning Profession: A Status Report on Teacher Development in the United States and Abroad. This report examines what research has revealed about professional learning that improves teachers’ practice and student learning. The report describes the availability of such opportunities in the United States and high-achieving nations around the world, which have been making substantial and sustained investments in professional learning for teachers over the last two decades. Funding for the multiyear research effort comes from the Bill and Melinda Gates Foundation, MetLife Foundation, NSDC, and The Wallace Foundation.