Dr. Duncan began her career as a substitute teacher and then as a teacher with the Bryant School District. She worked as a principal for the Wickes and Mena School Districts. She was the superintendent for Wickes and Elkins School Districts in Northwest Arkansas.  She was appointed as the Assistant Commissioner of Education in 2013 for the Arkansas Department of Education and has served as Associate Superintendent for the Springdale School District since 2014.

Dr. Duncan was awarded the 2013 Arkansas Rural Education Superintendent of the Year and the 2017 Arkansas Association of Educational Administrators Curriculum and Instruction Administrator of the Year. Additionally, she assists other district and building leaders in instructional improvement, fiscal awareness, and leadership development.  Expanding adult learning opportunities, Dr. Slocum also teaches university courses to assist in developing up-and-coming principals and superintendents across the state of Arkansas.