The board shall hold at least one examination during each year and may hold such additional examinations as are necessary. The board shall give public notice of the time and place for each examination at least 90 days in advance of the date set for the examination. A person desiring to take an examination shall make application at least 30 days before the date of the examination. The preparation, administration, and grading of examinations shall be governed by rules prescribed by the board. Examinations shall be designed to test the examinee’s knowledge of and proficiency in the subjects and techniques commonly taught in veterinary schools and familiarity with the law and rules governing veterinary medicine in this state. To pass the examination, the examinee must demonstrate scientific and practical knowledge sufficient to prove that he or she is a competent person to practice veterinary medicine in the judgment of the board. All examinees shall be tested by a written examination, supplemented by such oral interviews and practical demonstrations as the board may deem necessary. The board may adopt and use a national examination as adopted in rules of the board. For purposes of licensure, except by reciprocity, an individual’s results from a national examination shall be valid for 5 years from the date of the examination. After each examination, the board shall notify each examinee of the results of the examination, and the board shall issue licenses to the persons successfully completing the examination. The board shall record the new licenses and issue a certificate of registration to the new licensees. Any person failing an examination shall be admitted to any subsequent examination on payment of the application fee.