The provisions of regulation 5 do not apply in respect of any member of a police service established by or under any law, a member of the South African Defence Force, the Minister of Education, the member of the Executive Council responsible for education in a province or an official of the Department or provincial departments of Education who is required in the performance of his or her functions to enter or enters upon any public school premises and who produces proof of his or her identity to the satisfaction of the principal or HOD concerned.