In this paper is a study on the Educational Institutions for Wang-Se-Ja 王世子 in Choson Dynasty. The education for Wang-Se-Ja can be explained effectively according to two periods: before and after Check-Bong 冊封(investiture). Before Check-Bong, an institution called Bo-Yang-Chung 輔養廳 was established, and it took a role for both protecting and rearing Wang-Se-Ja 王世子. When he grew up enough to be able to read books, an institution called Kang-Hak-Chung 講學廳 was established for the education for his youth. After Check-Bong 冊封, an institution called Se-Ja-Si-Kang-Won 世子侍講院 was established and served full-scale education in preparation for his eventual succession of the throne. Meanwhile, there was also an institution called Se-Ja-Ik-Wee-Sa 世子翊衛司 for the purpose of protecting him. Choson dynasty also had institutions for educating Se-Son who belongs to royal families, but is not Wang-Se-Ja, because from time to time it happened that Se-Son succeeded the throne of the King, instead of Wang-Se-Ja. Se-Son-Kang-Seo-Won 世孫講書院 and Se-Son-Wee-Jong-Sa 世孫衛從司 are such institutions. However, the status of these institutions were different from that of institutions for Wang-Se-Ja. Se-Ja-Si-Kang-Won 世子侍講院 is not a standing institution, yet was equipped with systematic organization. It seems to reflect the superior status of Se-Ja-Si-Kang-Won 世子侍講院 to the institutions for educating Se-Son.