200.15—Timeline.
(a)
Each State must establish a timeline for making AYP that ensures that, not later than the 2013-2014 school year, all students in each group described in § 200.13(b)(7) will meet or exceed the State's proficient level of academic achievement.
(b)
Notwithstanding subsequent changes a State may make to its academic assessment system or its definition of AYP under §§ 200.13 through 200.20, the State may not extend its timeline for all students to reach proficiency beyond the 2013-2014 school year.