This document reviews various theoretical aspects of curriculum development in Indonesia, discussing the nature and importance of curriculum, including its evolution through different reforms since 1984. It outlines significant curricula, such as the 1984 curriculum's student-centered approach, the integration seen in the 1994 curriculum, and the characteristics of subsequent models like the competency-based curriculum and the independent learning curriculum. Additionally, it briefly covers perceptions related to the curriculum and refers to previous research in the field.