Chang Sung is a 2nd-year Ph.D. student of Adult and Higher Education (EDAH) with emphasis on Workforce Learning and Development in Department of Educational Leadership and Policy Studies (ELPS), Jeannine Rainbolt College of Education (JRCoE). He received his master’s degree in Educational Administration and Policy in 2013, and bachelor’s degree in Education in 2011, both from Sungkyunkwan University, South Korea. Prior to beginning his doctoral journey at the University of Oklahoma, he got wide-range of research experiences while working for national research institutes (e.g., Korea Research Institute for Vocational Education and Training, and National Institute for Lifelong Education) and Higher Education institutions (e.g., Sungkyunkwan University, and Hansung University) in South Korea. He participated in various research projects with respect to the studies on educational reform process in vocational education, academic performance in higher education, and organizational performance in lifelong education. His major role was primarily focused on analyzing quantitative data and performing statistical analysis, and it rendered him to acquire in-depth knowledge and expertise in quantitative research. His current research interests are human resource development and management policies, and organizational performance and competency development in the adult education setting.