; and (D) by adding at the end the following: (4) to improve evidence use by practitioners, education system leaders, and policymakers to effectively support infants and toddlers with disabilities, children with disabilities, and youth with disabilities. ; and (2) by striking subsection (c). 162. Commissioner for Special Education Research Section 162 ( 20 U.S.C. 9567a ), as redesignated by section 102, is amended— (1) by inserting scientifically valid before research, ; and (2) by striking children with disabilities and inserting infants and toddlers with disabilities, children with disabilities, and youth with disabilities . 163. Duties Section 163 ( 20 U.S.C. 9567b ), as redesignated by section 102, is amended— (1) by redesignating subsection (f) as subsection (g); (2) by striking subsections (a) through (e) and inserting the following: (a) General duties The Special Education Research Commissioner shall— (1) maintain published peer-review standards and standards for the conduct and evaluation of all research and development carried out under the auspices of the Special Education Research Center, aligned with the principles of scientifically valid research, in accordance with this part; (2) propose to the Director a special education research plan in accordance with subsection (b), and implement the research plan approved as part of the Institute's plan under section 115A; and (3) carry out research activities under this part consistent with the priorities and mission of the Institute and the mission of the Special Education Research Center described in section 161(b), and that are approved by the Director, such as activities that— (A) improve services provided under the Individuals with Disabilities Education Act in order to improve— (i) student outcomes, including academic achievement, functional outcomes, and educational results for children with disabilities and youth with disabilities; and (ii) developmental outcomes for infants and toddlers with disabilities