The Institute of Education Sciences (IES) provides scientific evidence to improve education practice and policy and shares that evidence in a way that can be used by educators, parents, policymakers, researchers, and the public. Within IES, the National Center for Special Education Research (NCSER) supports research to (1) expand knowledge and understanding of the needs of infants, toddlers, and children with disabilities in order to improve the developmental, education, and transition outcomes of such individuals; and (2) improve services provided under, and support the implementation of, the Individuals with Disabilities Education Act (20 U.S.C. 1400 et seq.).