Pennsylvania's public school system wasn't established by a single person, but rather evolved over time through the efforts of many individuals and groups. However, a key figure in its early development is
Robert Proud. While not the sole founder, his work as a historian and his detailed account of the early Pennsylvania educational system highlight the significant role he played in shaping its early structure and ideals.
The system's development also involved various legislative acts and the contributions of Quaker ideals emphasizing education for all. There wasn't a single founding "moment" but rather a gradual process.