Simon Gratz High School is a secondary school in Philadelphia. An inner-city school, it is perhaps best known for its famous alumni (listed below). Originally a public school directly operated by the School District of Philadelphia, Gratz has been operated as a charter school by Mastery Charter since September 2011. Students from the previous public school's enrollment area are eligible to attend. It is the fifth Philadelphia high school operated by Mastery.Situated at the southeast corner of the intersection of 18th St. & Hunting Park Ave., its address is 1798 Hunting Park Avenue, Philadelphia, PA 19140.In 2012, the school was removed from Persistently Dangerous Schools List while under the new management of Mastery Charter Schools.Neighborhoods servedThe Temple University graduate and family housing unit, Triangle Apartment Complex, is zoned to Simon Gratz.School uniformsGratz students are required to wear school uniforms, consisting of red simon gratz uniform shirts. black pants or black shirt, and any color shoes