1Where it appears to the Minister that the establishment of a joint board as the local education authority for the areas of two or more councils to whom this Part of this Schedule applies would tend to diminish expense or to, increase efficiency or would otherwise be of public advantage, the Minister may by order constitute a joint board (in this Act referred to as a " joint education board "), consisting of members appointed by those councils, and direct that the board shall be the local education authority for the areas of those councils :
Provided that the Minister shall not make such an order except after a local inquiry, unless all the councils for the areas of which the board are to be the local education authority have consented to the making of the order.