Dr. Hefner was named the Superintendent of Alexander County Schools effective August 1, 2014. She served as Acting Superintendent and later Interim Superintendent. Dr. Hefner was an associate superintendent from July 2012 to May 2014. She served as interim assistant superintendent from March 2012 until July 2012. She was a central office director over Elementary Curriculum, Student Services (K-12), Title 1 and has led the Common Core and Essential Standards Implementation. She was selected as the local, regional, and state Administrator of the Year for the North Carolina Association of Educational Office Professionals. She served as the principal at Bethlehem Elementary School for 9 years and as assistant principal for one year. Dr. Hefner also served as Curriculum Specialist at Bethlehem. She taught math from 1993 to 1998 at Bethlehem and from 1996 to 1998 part-time at the Alternative Learning Program with Alexander Central High School. Her career in the school system began as a teacher assistant and bus driver at Sugar Loaf Elementary School.