4.—(1) The Department shall issue, and may from time to time amend, a code of practice giving practical guidance in respect of the discharge by boards and the Boards of Governors of grant-aided schools of their functions under this Part.
(2) It shall be the duty of—
(a)boards and Boards of Governors of grant-aided schools exercising functions under this Part, and
(b)any other person exercising any function for the purpose of the discharge by boards and Boards of Governors of grant-aided schools of functions under this Part,
to have regard to the provisions of the code.
(3) On any appeal, the Tribunal shall have regard to any provision of the code which appears to the Tribunal to be relevant to any question arising on the appeal.
(4) The Department shall publish the code as for the time being in force.