Soohee Kim received her Ph.D. in Linguistics from the University of Washington, where she taught Korean language, culture and linguistics for 17 years. She is interested in the role of grammatical knowledge in language acquisition and the maintenance and revival of heritage language skills. She continues to study many languages including Quechua, Tagalog, Japanese, Chinese, Russian, Polish, Tibetan, Urdu, Hebrew, Latin and Sanskrit. She is the author of Korean Flash Cards and the lead author of the Korean textbooks: Korean Grammar: The Complete Guide to Speaking Korean Naturally.

Haewon Cho is the Director of the Korean Language Program and a Lecturer in Foreign Languages of Korean in EALC at the University of Pennsylvania, specializing in Korean language pedagogy and business language instruction. She has extensive teaching experience and has taught all levels of Korean language courses at various institutions such as University of Michigan and Middlebury College. She is a co-author of You Speak Korean, Korean Grammar: The Complete Guide to Speaking Korean Naturally, and Easy Korean. She holds M.A. degrees in Linguistics and Teaching ESL from the University of Washington.

Emily Curtis holds a Ph.D. in Linguistics and an Ed.D. from the University of Washington. She teaches courses in general linguistics, phonology and morphology at Western Washington University and is a consultant in intercultural communication and language pedagogy. Her research interests are in phonology, heritage language and metalinguistic awareness. She has studied French, Japanese, Korean, Mandarin, Spanish and Lushootseed and is also co-author of Korean Grammar: The Complete Guide to Speaking Korean Naturally.