“…Between 2009 and 2014, in-service teachers were encouraged to attend 600-hour courses (ibid); each regional educational office has certified in-service teachers who can conduct lessons in English since 2010 (Choi, 2015;Yi et al, 2011), although recently the pressure from the government on teachers to be certified has decreased. These initiatives have not had impact to the degree desired, partly due to the backwash from the college entrance exam, which mainly focuses on listening and reading skills and grammatical knowledge (Choi, 2017a), and partly due to some teachers" limited English proficiency and insufficient knowledge of pedagogy using English as the MOI (Ahn, 2015). Still, various survey results show that most teachers at least in part use English as the MOI: in teacher surveys on MOI for ELT, which included the item on the exclusive use of Korean, no one reported exclusively using Korean as the MOI (e.g., Hwang et al, 2012;Min, 2008).…”