34 C.F.R. § 668.115
(b) The purpose of a prehearing conference is to allow the parties to settle or narrow the dispute. A prehearing conference consists of—
(c) All prehearing conferences requiring appearances by the parties shall take place in the Washington, D.C. metropolitan area.
(Authority: 20 U.S.C. 1094)
[52 FR 30115, Aug. 12, 1987, correctly designated at 52 FR 46354, Dec. 7, 1987, as amended at 57 FR 47753, Oct. 19, 1992]