4(1)A special agreement may provide—
(a)for the giving of religious education in the school in accordance with the provisions of the trust deed relating to it, or (where provision for that purpose is not made by such a deed) in accordance with the practice observed in the school before it became a voluntary school; and
(b)for the employment in the school, for the purpose of giving such religious education, of such number of reserved teachers as may be specified in the agreement.
(2)Sub-paragraph (1)(a) has effect subject to section 378(1)(c) and any arrangements made under section 378(2).