The School District of Philadelphia (SDP) operates over 220 schools with the mission of delivering on the civil right of every child in Philadelphia an excellent public school education and ensuring all children graduate ready to succeed, fully engaged as a citizen of our world. SDP utilizes the annual System of Great Schools (SGS) process to identify new opportunities that can be implemented, investments that can be made, and interventions that can be applied in order to provide more students with access to great schools.