9. The number of parent governors required must be made up of parent governors appointed by the governing body if one or more vacancies for parent governors arises and either–
(a)the number of parents standing for election is less than the number of vacancies;
(b)at least 50 per cent of the registered pupils at the school are boarders and it would, in the opinion of the appropriate body, be impractical for there to be an election of parent governors; or
(c)in the case of a school which is a community special school or foundation special school established in a hospital, it would, in the opinion of the appropriate body, be impractical for there to be an election of parent governors.