· Visiting Research Fellow, Seoul National University (Current)2022–
· Professor, International Christian University2003–2022
· Associate Professor, Ewha Women`s University, Korea2000–2003
· Assistant And Associate Professor Researcher, Korea National Open University1991–2000
· Ph.D, Instructional Systems Technology, Indiana University Bloomington1984–1988
· BA, Education, Seoul National University1978–1982