- Conducted one on one or group classes of English lessons for Korean beginners to advanced students depending on their ability and skills in English in terms of grammar, logical sentence structure, spelling, vocabulary, pronunciation, accent, writing, conversation etc. - Developed government required course outlines for the different subjects offered in the 2-month ESL program for adults. - Involved in formulating the written and oral placement test of the new students - Compiled a textbook used for pronunciation classes.