Objectives This study attempted to examine the overall flow of how the general high school curriculum in Korea has been organized and operated in a time series.
 Methods To this end, this study used literature research methods to collect general high school curriculum docu-ments from the 1st curriculum to the 2022 revised curriculum, and analyzed changes by revision period, focusing on the general high school curriculum organization and operation system, subject organization, and time dis-tribution standards.
 Results First, it was confirmed that a general high school curriculum organization and operation system has been established and standardized, focusing on curriculum organization and time distribution standards. Second, it was confirmed that subjects suitable for the talents, aptitudes, abilities, and careers of general high school students have been properly imposed under the distinction between essential and optional. Third, in terms of efficiency in organizing and operating general high school curriculum, it was confirmed that the criteria for allocation and com-pletion time have been set in consideration of the situation of the local community and school, the needs of stu-dents, and the characteristics and contents of the subject.
 Conclusions First, it is necessary to implement a customized curriculum system optimized based on the student's career so that general high school students can develop their own talents, aptitudes, and abilities and pioneer ca-reers in terms of lifelong learning. Second, to organize and operate a customized curriculum for students, it is nec-essary to restructure the subject by career of general high school students and reorganize the subject in consid-eration of the nature, scope, role, status, and weight of the subject in terms of balance, sequence, and concentration. Third, as the class volume standard shifts from unit to credit, it is necessary to autonomously adjust the criteria and scope of the class time distribution and the completion credit for each subject if necessary at school rather than limiting the general high school course completion credit to the minimum amount of instruction.
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