S.C. Code Regs. 38-383.135. Minimum passing scores

(a) The driver applicant must correctly answer at least 80 percent of the questions on each knowledge test in order to achieve a passing score on such knowledge test. (b) To achieve a passing score on the skills test, the driver applicant must demonstrate that he/she can successfully perform all of the skills listed in Regulation 38-383.113. (c) If the driver applicant does not obey traffic laws, or causes an accident during the test, he/she shall automatically fail the test. (d) The scoring of the basic knowledge and skills tests shall be adjusted as follows to allow for the air brake restriction (Regulation 38-383.95): (1) If the applicant scores less than 80 percent on the air brake component of the basic knowledge test as described in Regulation 38-383.111(g), the driver will have failed the air brake component and, if the driver is issued a CDL, an air brake restriction shall be indicated on the license; and (2) If the applicant performs the skills test in a vehicle not equipped with air brakes, the driver will have omitted the air brake component as described in Regulation 38-383.113(c) and, if the driver is issued a CDL, the air brake restriction shall be indicated on the license.