The board before whom any objection or proceeding with respect to the placement of pupils is pending may, upon authorization in writing of a majority of the board, request the attorney general of Louisiana to appear in such proceedings as amicus curiae to assist the board in the performance of its judicial functions and to represent the public interest. Expenses of court reporters, subpoenas, witness fees and other costs of such proceedings approved by the board shall be the obligation of the city or parish involved, and shall be paid from the public school funds of such city or parish.
La. R.S. § 17:109