Where the articles of government for any county, voluntary or maintained special school provide—
(a)for the parents of any pupil who is excluded from the school in circumstances in which no right of appeal is given by section 26 of this Act to have the right to appeal against his exclusion to a person specified by the articles; and
(b)for the procedure to be followed on such an appeal; any decision on such an appeal that the pupil should be reinstated, or that he should be reinstated earlier than would otherwise be the case, shall be binding on the head teacher.