Hee-Jin has been teaching EFL and ESL since 2000. She has worked in Korea teaching Intensive English programs and TOEFL and TOEIC preparation classes. She has also worked as an instructor and teacher-trainer at California State University, San Marcos. She holds a B.A. in German Education and an M.A. in TESOL. She is currently in the Masters of Education (Ed.M) program in Applied Linguistics at Teachers College, Columbia University. Her research interests are language and identity, nonnative English teacher issues, and language testing.