A.  The board in its discretion may extend for a reasonable period the time within which any course of instruction shall be completed by any student upon the showing of good cause that shall include but is not limited to:

(1)  Interruptions in completing the course of instruction caused by any illness of or accident to the student;

(2)  Enrollment and attendance in any secondary school or institute of higher learning; or

(3)  Service in the armed forces of the United States.  

B.  Application for an extension of time pursuant to this Section shall be made to the board in writing.  

Acts 1964, No. 309, §1.  Acts 1984, No. 238, §1.