Hei Sook Yoo

Hei Sook Yoo

Hei Sook Yoo

Adjunct Faculty

Korean: Korean Linguistics, Language Assessment, North Korean Language, Educational Technology

Hei Sook Yoo's entire academic career has been dedicated to teaching and researching the development of the Korean language and culture in the U.S. and Korea. She received a Ph.D. in Teaching Korean Language and Culture as a Foreign Language from Korea University. She was teaching and researching the Korean language and culture as a teaching assistant professor at Georgetown University before joining GMU. She has taught a wide scope of students ranging from K-12 to graduate, and a variety of professional groups for all levels of courses in diverse settings. She has developed various textbooks and media materials for Korean language and culture at The International Korean Language Foundation and The Korea Foundation. She has also edited and consulted the Korean Dictionary of Daum.net and Naver.com, which are one of the most popular web portal sites in Korea. She has developed Testing and Grading for TOPIK (The International Standardized Korean Proficiency Test). She holds the National Teaching License for Teaching Korean Language and Culture conferred by the President of Korea. She is a certified ACTFL OPI tester, OPI rater, WPT rater, and AAPPL rater of Korean. She is also currently teaching as a senior lecturer at the Korea Embassy in DC and further researching online pedagogy and technology integration in Learning Technologies in Schools in Master's degree program at George Mason Graduate school. Her current teaching-related research interests lie in developing the Korean language curriculum and assessment using digital media literacy and educational technology. For the development of an online/blended curriculum, she received an honorable grant for the 2019 CIBER Business Language Research and Teaching Awards funded by the U.S. Department of Education. 

Selected Publications


  • Hei Sook Yoo, et al. (2020), "Development of Various Course Models for the Unification Era-focusing on Korean Schools and Communities in the US," Journal of Korean-American Education 35, The National Association for Korean Schools.
  • Hei Sook Yoo (2019), “A Study on Blended Learning for Language, Culture, and History for Korean Heritage Education toward 21st Century Digital Literacy,” Journal of Korean-American Education 34, The National Association for Korean Schools.
  • Hei Sook Yoo, et al. (2019), “Exploring the Ways on How to Write Commentaries for Foreign Students in Korea-Focusing on Text Expansion and Comparison,” Journal of the General Education 13-3, The Korean Association of General Education.
  • Hei Sook Yoo, et al. (2015), “An Analysis of Korean college students' and Korean learners' Meta-cognitive Strategies in Writing,” Journal of the International Network for Korean Language and Culture 12-3, The International Network for Korean Language and Culture.
  • Hei Sook Yoo (2015), “Analysis of Learners' Preferences and Needs in Korean Language and Culture Education using Media: A Study based on Business Korean classes in the U.S.,” Korean Cultural Studies 67, Research Institute of Korean Studies.
  • Hei Sook Yoo (2011), “The Current Status and Its Future Prospects of Non-Regular Korean Language and Culture Program-Based on the Program at The Embassy of the Republic of Korea in the U.S.A..,” The Language and Culture 7-1, The Korean Language and Culture Education Society.
  • Hei Sook Yoo (2008), “A Sociolinguistic Study on the Construction and Organization of Conversations in the Korean Language Textbooks-focusing on analyses of construction and sociolinguistic elements of the dialogues-” Ph.D. dissertation, Department of Korean Language & Literature, Korea University.
  • Hei Sook Yoo (2008), “A Sociolinguistic Study on the Constructing of Conversations in Korean Language Textbooks-focused on the Organization of Telephone Conversations-,” Bilingual Research 36, The Korean Society of Bilingualism.
  • Hei Sook Yoo (2007), “An Analysis of English Native Speakers’ Needs and Strategies in Learning Chinese Characters,” Bilingual Research 34, The Korean Society of  Bilingualism.
  • Hei Sook Yoo (2007), “A study on Greeting Expressions in Korean Language Textbooks and Effective Teaching Methods for them,” Journal of Korean Language Education 18-1, The Korean Language Education of International Association for Korean Language Education.
  • Hei Sook Yoo, et al. (2002), “Korean Language Policy for Unification Period,” in How to Unify South-North Korean Language, Kookhak Publisher.
  • Hei Sook Yoo, et al. (1999), “A History of the Studies on Socio-linguistic Dialects,” in A History of the Studies on Modern Korean, Pagijung Press.

Grants and Fellowships


  • Grant for the 2019 CIBER Business Language Research and Teaching Awards, the 15 CIBER’s U.S. Department of Education (USDOE) Title VI grants, 2019
  • Funding Award for the International World Korean Educators Conference, The King Sejong Institute Foundation, July 2019
  • Grant for Departmental Professional Development/Conference, The Asian Studies Program in School of Foreign Service at Georgetown University, January 2017

Courses Taught


  • Intro to the Korean Language (KORE 102), Spring 2020
  • Elementary Korean (KORE 110), Fall 2017, 2018, 2019, 2020, Spring 2019
  • Intermediate Korean 1 (KORE 210), Spring 2018
  • Intermediate Korean 2 (KORE 202), Spring 2008
  • Business Korean (KORE 305), Fall 2017, Fall 2018
  • Online Course for Business Korean (KORE 305 DL), Spring 2019, Spring 2020
  • Literature and Media (KORE 331), Fall 2019
  • Academic Purpose Writing: Advanced Korean Writing (KORE 370), Spring 2020
  • Intensive Digital Writing (KORE 370 DL-WI Major Requirement), Fall 2020