In response to the recent KSL education program that was introduced into the public education system for Culturally Linguistically Diverse Student, this paper aims to make suggestions that is appropriate for the current state of Korean Language education. First the concept of a "culturally linguistically diverse student" will be defined then the paper will further claim that the KSL education program in public schools must be custom tailored to the diverse spectrum of multi-culture students. This is the case as the spectrum is very broad, for example children born in Korea to international marriage, recently immigrated students from abroad due to one of their parents marriage into Korea, children of migrant workers, North Korean defectors, and students that return from studying abroad. In order to do this first, I organized the concept, characteristics and contents of the Korean as a second language education that was introduced into the KSL program. Then, this paper discusses the way that the Sheltered Program, that has the characteristics and goals of the BICS that focuses on survival Korean and the CALP that cultivates the skills to learning Korean, is carried out with the characteristics as a stepping stone program. In addition according to the results of a field study on educational schools, the current status of the KSL program was observed. According to the observation and analysis, it was concluded that instead of a unique routing approach it is more appropriate to customize the education program according to the region and the unique characteristics of the students in the respective school. Therefore, in order to develop a stable and effective Korean language education system for culturally linguistically diverse students in the public school system there are several considerations needed to be taken. First, there is a need to establish a education policy direction on the level of the state. Next, construction of a institutional KSL education support policy, expansion of a Korean education program that cultivates and aims to increase literacy among multi-cultural students, establishment of an academic identity in the area of KSL education and the cultivation of multi-cultural KSL teaching capacity for instructors in education.