The Southeast Asia Interdisciplinary Development Institute Graduate School of Organization Development and Planning, also known as the SAIDI Graduate School of OD&P, or simply SAIDI, is a graduate school in Antipolo, Rizal Province, Philippines.

In this newly proposed program, systems theory, previously used as a foundational principle for instruction development, was adapted for organizational applications.

[3] In September 1975, SAIDI School of OD began accepting students from Southeast Asia and introduced two master's programs that followed the "Open Learning Philosophy".

This approach utilized a blend of print modules, oral instruction, and electronic technology.

[3][4] For its initial eight years, SAIDI was located in Arzobispo, Real, and General Luna Streets in Intramuros, Manila.