Mount Saint Joseph Academy, commonly called The Mount, in Flourtown, Pennsylvania, is a Philadelphia-area all-female, Catholic, college preparatory school within the Archdiocese of Philadelphia. It was founded in 1858 by the Sisters of Saint Joseph. The academy was originally located in Philadelphia on the grounds of what is now Chestnut Hill College. Originally a boarding school, the academy began accepting day students in 1911. In 1928, this all girls high school was the first Catholic school to be approved by the Middle States Association accrediting agency. In response to the growth of the school and evolving educational needs, the Mount moved in 1961 to its present site, just outside the community of Chestnut Hill near Philadelphia. Since relocation to the new campus, the school has grown significantly.

Montgomery County, colloquially referred to as Montco, is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population of the county was 856,553, making it the third-most populous county in Pennsylvania after Philadelphia and Allegheny counties. The county is part of the Southeast Pennsylvania region of the state.