This study examined the status of Japanese immersion education in a JFL environment, focusing on the Department of Japanese Language and Literature at Korea University. The university has been practicing immersion education for more than ten years, and its results are as follows. First, after reviewing the names and descriptions of all the courses provided, it was found that there were no subjects that focus on listening skills. Thus the Japanese immersion education program which has been implemented since the second semester in 2003 at Korea University could be said, as a result, helped students to improve their listening skills. Second, as all the courses fall into the categories of either theoretical or practical ones, the relative importance of theory oriented courses was found to be higher than that of language skill oriented courses in the immersion education program. Although the number of language skill oriented courses are much smaller than that of theory oriented courses, the immersion education program was introduced to all of these rather “minor” courses given among the university’s whole curriculum, and even some supplemental courses were opened additionally to further improve students’ language skills. Finally, even since the university’s administration has changed its policy toward immersion education programs in 2014 that each departments have a right to decide whether or not to introduce immersion programs to their courses, far so many teachers and lecturers gave the GO signs to immersion programs, believing that it’s essential for students’ language skill improvement.