This study is to analyze organizing school curriculum after the 7th national curriculum implementation. To analyze the actual situation of organizing elective curriculum in general high schools, I have visited five schools in Seoul and Gyeonggi region and conducted interview and observation. Each school is responsible for determining either increase or decrease in the number of units of curricular subjects and determining the arrangement of school year and semester; it is also responsible for decision-making in organizing the classes for the students who should take a certain curricular subjects and placing the teachers for those subjects. Although student choice is not guaranteed fully due to the limitation in the teacher supply and school facility, concrete procedures have been influenced by the convention shaped long time. While the process of organizing school curriculum includes various steps, the most critical issue in the decision-making process is whether or not a given choice is conducive to teaching hours of each teachers, giving students an edge in college entrance examination, and organizing class routine. Hence, the curriculum is being managed in a much reduced manner than the proposed range of choice for given conditions. The range of choice for curricular subjects is being narrowed and the number of courses to be taken is being reduced, compared to the first year of implementation. Such a setback is due to the assessment that calculation of students' school achievement record tends to be done in a more advantageous way when many students choose to take the same subject. Such thinking is also shown to exert influence upon increase or decrease in the number of curricular units to be taken and arrangement of school year and semester.