Section 20
SEC. 20. Ratings required.&mdashIn order to pass the examination, a candidate must obtain on the basis of one hundred per cent a general average of seventy-five per cent or over in both the theoretical and practical examinations, with no ratings below fifty per cent in more than two subjects in the theoretical examinations: Provided, That any candidate who passed in the theoretical examination but failed in the practical examination, may, upon taking a re-examination, repeat only the practical examination and vice-versa: Provided, further, That any candidate who fails to pass the theoretical or practical examination in three successive attempts shall not be admitted in the fourth examination unless be could present to the Board a certification that he had enrolled and undergone within the year preceding, a pre-board review course from a duly accredited college of Pharmacy.