34 C.F.R. § 222.158
When the Secretary reviews an initial decision, the Secretary—
(b) Mails to each party written notice of the Secretary's final decision.
(Authority: 20 U.S.C. 7711(a))
[60 FR 50778, Sept. 29, 1995, as amended at 62 FR 35419, July 1, 1997]