Saerhim Oh has been teaching English as Second Language (ESL) since 2005. She taught in English language programs at University of Hawaii at Manoa and Seoul National University and has been teaching in the intensive English program at the American Language Program, Columbia University since 2011.
In addition to teaching ESL, she teaches TESOL courses to graduate students at CUNY, Teachers College, and NYU. She is also an English test developer and test rater for large scale tests, and has worked as a doctoral fellow at Educational Testing Service (ETS) for three years. Currently, she is pursuing her Ed.D. in Applied Linguistics at Teachers College, Columbia University with a focus on language assessment.