The initial instrument of government for the governing body of a grant-maintained special school, and the initial articles of government for such a school, shall be such as are prescribed.

The initial instrument of government shall have effect as from the incorporation date.

The initial articles of government shall have effect as from the date of implementation of the proposals made under section 339(2)(a) or 345 but, in the case of a governing body incorporated in pursuance of proposals made under section 339(2)(a), such of the articles as may be prescribed shall have effect as from the incorporation date.