34 CFR § 300.195 - Decision.
(a) The designee who conducts the show cause hearing—
(2) Submits a copy of the decision to the Secretary and sends a copy to each party by certified mail with return receipt requested.
(c) The Secretary adopts, reverses, or modifies the designee's decision and notifies all parties to the show cause hearing of the Secretary's final action. That notice is sent by certified mail with return receipt requested.