Examination for applicants shall be offered by the Board during the month of February and July of each year in each of barbering, beauty culture and manicuring. The examinations shall include both a practical demonstration and a written or oral test, and shall cover the pertinent subjects usually included in the curricula of schools of barbering and beauty culture. The satisfactory passing of an examination shall require a cumulative grade of at least seventy-five (75%) percent. Any person who fails two consecutive examinations shall undertake and satisfactorily complete such course of study as the Board may require before such person may take another examination. The Board may appoint one or more examiners to conduct such examinations.