American Montessori Association

Center for the Advanced Study of Teaching & Learning – University of Virginia

Center on Enhancing Early Learning Outcomes

DC Office of the State Superintendent of Education, Office of Early Childhood Education

Delaware Office of Early Learning, DE Department of Education

Georgetown University Department of Psychology

ICF International & The University of Texas Health Science Center at Houston

Indiana Association for the Education of Young Children

International Step by Step Association

Iowa Department of Education

Joyce Foundation

Kansas State Department of Education

Missouri Coordinating Board for Early Childhood

Montgomery County, MD Early Childhood Advisory Council

National Association for the Education of Young Children

National Center for Childen and Families, Teachers College, Columbia University

National Center for Research on Early Childhood Education

New America

Ohio Department of Education

Pennsylvania Office of Child Development and Early Learning

University of the District of Columbia Early Childhood Leadership Institute

University of Washington College of Education

Vermont Birth to Five

Virginia Early Childhood Foundation

Washington Area’s Women’s Foundation