2003~Present
- ELT Consultant and Teacher Trainer
- KOTESOL (Seminars) 2009~2011 : Writing, Readers, Phonics, American Textbook
- Hansol Storytelling Specialist Training Course 2010~ present
- 2011 Woonjin and Lotte Mart Seminars for parents
- MBC Mkids Teacher Training
- Wiz Island, Wonderland, Hufsedu, Wonjin, and etc. Teacher Training and Workshop
- Semianrs, Workshops, and Presentations for Teachers and Parents
- Public School Teacher Training for CLIL: Korean Education Board (Gyeonggido, Gyeonsangdo)
- Gyeonggido NTTP (National Teachers Training Program: for Global Education) for English and science teachers
- Consulting for Educational Game Development of KAIST & Game Hi
2001~2010 Oxford, McGraw Hills, Cengage (Thomson Heine), Longman, lots of Korean Publishers:
Book Consulting and Review
1991.-2006 English Teacher at ELT Academies