The Secretary amends the regulations governing title I, Part A of the Elementary and Secondary Education Act of 1965, as amended (ESEA) (the "Title I regulations"), to no longer authorize a State to define modified academic achievement standards and develop alternate assessments based on those modified academic achievement standards for eligible students with disabilities. In order to make conforming changes to ensure coordinated administration of programs under title I of the ESEA and the Individuals with Disabilities Education Act (IDEA), the Secretary is also amending the regulations for Part B of the IDEA. Note: Nothing in these regulations changes the ability of States to develop and administer alternate assessments based on alternate academic achievement standards for students with the most significant cognitive disabilities or alternate assessments based on grade-level academic achievement standards for other eligible students with disabilities in accordance with the ESEA and the IDEA, or changes the authority of IEP teams to select among these alternate assessments for eligible students.