A prior section 1472, Pub. L. 91–230, title VI, § 672, as added Pub. L. 105–17, title I, § 101, June 4, 1997, 111 Stat. 136, related to research and innovation to improve services and results for children with disabilities, prior to the general amendment of subchapters I to IV of this chapter by Pub. L. 108–446.

Another prior section 1472, Pub. L. 91–230, title VI, § 672, as added Pub. L. 99–457, title I, § 101(a), Oct. 8, 1986, 100 Stat. 1146; amended Pub. L. 100–630, title I, § 108(b), Nov. 7, 1988, 102 Stat. 3301; Pub. L. 101–476, title VIII, § 801, title IX, § 901(b)(162), (163), Oct. 30, 1990, 104 Stat. 1141, 1149; Pub. L. 102–119, §§ 12, 25(b), Oct. 7, 1991, 105 Stat. 595, 607, related to definitions, prior to repeal by Pub. L. 105–17, title II, § 203(b), June 4, 1997, 111 Stat. 157, effective July 1, 1998.