20 U.S.C. § 6682
In this subpart:
(1) Classified school employee The term “classified school employee” means an employee of a State or of any political subdivision of a State, or an employee of a nonprofit entity, who works in any grade from prekindergarten through high school in any of the following occupational specialties:
(Pub. L. 116–13, § 3, , 133 Stat. 847.)
Section was enacted as part of the Recognizing Achievement in Classified School Employees Act, and not as part of the Elementary and Secondary Education Act of 1965 which comprises this chapter.