Paul Gust Vallas Sr. is an American politician and former education superintendent. He served as the superintendent of the Bridgeport Public Schools and the Recovery School District of Louisiana, the CEO of both the School District of Philadelphia and the Chicago Public Schools, and a budget director for the city of Chicago.

The School District of Philadelphia (SDP) is the school district that includes all school district-operated public schools in Philadelphia. Established in 1818, it is largest school district in Pennsylvania and the eighth-largest school district in the nation, serving over 197,000 students as of 2022.