The office shall be the principal place of business, and must be sufficient for conducting all business related to the operation of the school including, but not limited to:

1. facilities for conducting personal interviews;
   
   
2. storage of all records required for the operation of the school;
   
   
3. secretarial or telephone answering service available for a minimum of six hours between 9:00 a.m. and 5:00 p.m. on normal business days;
   
   
4. a copy of North Carolina Motor Vehicle Laws Chapter 20 of the General Statutes; and
   
   
5. if located in conjunction with classroom facilities, office must be separated by a physical barrier.