Analysis of the Practice of“In-Depth and Supplementary Differentiated Curriculum" in“the National Common Basic Curriculum" in Korea: A Case Analysis of the Enforcement Process in the Office of AEducation Regarding“the School District System Area" and“the non-School District System Area"
Community Class Academic Achievement Effects and Ability Grouping Class in korea ; Analysis of class based on ability grouping at schools emphasizing advancement to "higher education" and schools in general in Korea