School Construction Systems Development project
From 1961–1967, in the U.S., the School Construction Systems Development (SCSD) project created an innovative, flexible, and prefabricated architectural building system that ignited an international interest in systems-based architecture. The project emerged in response to the post-WWII baby boom, the mainstreaming of progressive education, the industrialization of building materials, and a nationwide search to build schools faster and cheaper.
Source: Wikipedia — School Construction Systems Development project (CC BY-SA 4.0)