34 C.F.R. § 300.536 Reevaluation.
Title 34 - Education
Each public agency shall ensure— (a) That the IEP of each child with a disability is reviewed in accordance with §§300.340–300.350; and (b) That a reevaluation of each child, in accordance with §§300.532–300.535, is conducted if conditions warrant a reevaluation, or if the child's parent or teacher requests a reevaluation, but at least once every three years. (Authority: 20 U.S.C. 1414(a)(2))
Title 34: Education
PART 300—ASSISTANCE TO STATES FOR THE EDUCATION OF CHILDREN WITH DISABILITIES
Subpart E—Procedural Safeguards
Procedures for Evaluation and Determination of Eligibility
§ 300.536 Reevaluation.