located_in_the_administrative_territorial_entity springside school
___MASK30___ is the largest city in the Commonwealth ___MASK19___ ___MASK38___ and the fifth - most populous city in the United States , with an estimated population ___MASK19___ 1 , 567 , 442 and more than 6 million in the seventh - largest metropolitan statistical area , . ___MASK30___ is the economic and cultural anchor ___MASK19___ the Delaware Valleya region located in the Northeastern United States at the confluence ___MASK19___ the Delaware and Schuylkill rivers with 7 . 2 million people residing in the eighth - largest combined statistical area in the United States . ___MASK38___ ( ___MASK38___ German : " Pennsylvaani "), officially the Commonwealth ___MASK19___ ___MASK38___ , is a state located in the northeastern and Mid - Atlantic regions ___MASK19___ the United States . The Appalachian Mountains run through its middle . The commonwealth borders Delaware to the southeast , Maryland to the south , West Virginia to the southwest , Ohio to the west , Lake Erie and the Canadian province ___MASK19___ Ontario to the northwest , New York to the north , and New Jersey to the east . The Eastern United States , commonly referred to as the American ___MASK42___ or simply the ___MASK42___ , is a region roughly coinciding with the boundaries ___MASK19___ the United States established in the 1783 Treaty ___MASK19___ Paris , which bounded the new country to the west along the Mississippi River . It is geographically diverse , spanning the Northeast and Southeast as well as the eastern part ___MASK19___ the Central United States . The ___MASK96___ Valley is ___MASK93___ through which the ___MASK96___ River flows . By extension , this toponym is commonly used to refer to the ___MASK30___ metropolitan area (" the [ Lower ] ___MASK96___ Valley Metropolitan Area "), which straddles the Lower ___MASK96___ River just ___MASK35___ ___MASK19___ its estuary . ___MASK1___ ___MASK30___ is a section ___MASK19___ the city ___MASK19___ ___MASK30___ , ___MASK38___ . The official boundary is Stenton Avenue to the north , the Schuylkill river to the southwest , Northwestern Avenue to the northwest , Roosevelt Boulevard to the south , and Wister Street and Stenton Avenue to the east . The area is divided by Wissahickon Creek into two subsections , Upper ___MASK1___ and Lower ___MASK1___ ___MASK30___ . Upper ___MASK1___ are Germantown , Mount Airy ( which itself is divided into east and west ), and Chestnut Hill , and Lower ___MASK1___ are Roxborough , East Falls , and Manayunk . The ___MASK30___ Police Department patrols two districts located within ___MASK1___ ___MASK30___ . The two patrol districts serving ___MASK1___ ___MASK30___ are the 5th and 14th districts . The Northeastern United States , also referred to as the American Northeast or simply the Northeast , is a geographical region ___MASK19___ the United States ___MASK19___ America bordered to the north by Canada , to the east by the ___MASK44___ , to the south by the Southern United States , and to the west by the Midwestern United States . The Northeast is one ___MASK19___ the four regions defined by the Census Bureau for the collection and analysis ___MASK19___ statistics . The Census Bureau - defined region has a total area ___MASK19___ with ___MASK19___ that being land mass . Though lacking a unified cultural identity , the Northeastern region is the nation ' s most economically developed , densely populated , and culturally diverse region . Of the nation ' s four census regions , the Northeast is the second most urban , with 85 percent ___MASK19___ its population residing in urban areas , led by the West with 90 percent . From 1861 to 1952 Chestnut ___MASK94___ Academy was an all - male Pre - K through 8th grade independent college preparatory school located in ___MASK1___ ___MASK30___ . The 9th though 12th grades were added , one per year , beginning in the Fall ___MASK19___ 1952 with the first High School graduating class in the Spring ___MASK19___ 1956 . In 2011 , CHA merged with its academic partner and neighbor , the all - girls school Springside School . The two schools together are now known as Springside Chestnut ___MASK94___ Academy . From 1879 to 2010 Springside School was an all - girls school ( pre - K through 12th grade ) in the Chestnut ___MASK94___ neighborhood , in the ___MASK1___ section ___MASK19___ Philadelphia in the United States . In 2010 Springside School merged with its academic partner and neighbor , the all - boys school Chestnut ___MASK94___ Academy . The two schools together are now known as Springside Chestnut ___MASK94___ Academy . Springside School was the oldest girls ' school in Philadelphia . Historically this school had an exchange program with the Jules - Fils Lycee in Carcassonne , France . It was suspended in 2003 .