A school principal shall ensure that, during all hours students are in school, any door or doorway that could be used as an exit in case of fire or other emergency remains free of all obstruction and free of any device or mechanism which may impede immediate egress through the door or doorway. This section does not include doors that provide access solely to private offices, supply rooms, or storage rooms.
N.D.C.C. § 15.1-06-11