National Association for the Education of Young Children; American Academy of Pediatrics; American Federation of Teachers; American Psychological Association; Attendance Works; Build Initiative; Children's Defense Fund (U.S.); Child Care Aware; Center for Law and Social Policy; Defending the Early Years; Council for Exceptional Children. Division for Early Childhood; Early Care and Education Consortium; First Focus; First Five Years Fund; FPG Child Development Institute. FirstSchool; IDEA Infant & Toddler Coordinators Association; MomsRising; National Association of Elementary School Principals; National Association for Family Child Care; National Association of Early Childhood Specialists in State Departments of Education; National Association of Early Childhood Teacher Educators; National Association of State Directors of Special Education (U.S.); National Black Child Development Institute; National Council of La Raza; National Education Association of the United States; National Head Start Association (U.S.); National Urban League; National Women's Law Center; Nemours Foundation; New America; Save the Children (U.S.); Save the Children Action Network; Zero to Three (Organization)