(a) In general.
(1) In any action or proceeding brought under section 615 of the Act, the court, in its discretion, may award reasonable attorneys’ fees as part of the costs to—
(i) The prevailing party who is the parent of a child with a disability;
(ii) To a prevailing party who is an SEA or LEA against the attorney of a parent who files a complaint or subsequent cause of action that is frivolous, unreasonable, or without foundation, or against the attorney of a parent who continued to litigate after the litigation clearly became frivolous, unreasonable, or without foundation; or
(iii) To a prevailing SEA or LEA against the attorney of a parent, or against the parent, if the parent’s request for a due process hearing or subsequent cause of action was presented for any improper purpose, such as to harass, to cause unnecessary delay, or to needlessly increase the cost of litigation.
(2) Nothing in this subsection shall be construed to affect section 327 of the District of Columbia Appropriations Act, 2005.