Free appropriate public education or FAPE means special education and related services that—

(a) Are provided at public expense, under public supervision and direction, and without charge;

(b) Meet the standards of the SEA, including the requirements of this part;

(c) Include an appropriate preschool, elementary school, or secondary school education in the State involved; and

(d) Are provided in conformity with an individualized education program (IEP) that meets the requirements of §§ 300.320 through 300.324.