1. Taegu Middle School - 1956 (South Korea)
2. Kyung Buk High School - 1959 (South Korea)
3. Sogang University - 1964 (South Korea) w/BA
4. Marquette University - 1967, Milwaukee, WIS w/MBA
5. Nowthwestern University - 1972, Evanston, ILL w/MA & Ph.D.
6. Assistant Professor at Marquette Univeristy - 1976, Milwaukee, WIS
7. Economist At US Dept of Transportation - 1976, Cambridge, MA
8. Worked at GTE/Version till 2004 -Stamford, CT and Irving, TX
9.Worked at Radio Shack Corp, Ft Worth, TX - 2006
10. Worked at IMC2 in Dallas, TX - 2010
11. Adjunct Professor at University of Dallas since 2005