34 C.F.R. § 303.15
Free appropriate public education or FAPE, as used in §§ 303.211, 303.501, and 303.521, means special education and related services that—
(d) Are provided in conformity with an individualized education program (IEP) that meets the requirements of 34 CFR 300.320 through 300.324.
(Authority: 20 U.S.C. 1401(9))