In 1976, it moved to the Armory, now owned by St. Rita's Church, located at Broad & Wharton Streets.

It features a three-bay, projecting center section with an arched limestone entrance, decorative panels, and a parapet with battlement cuts.

[1] As one of the first Small Learning Communities, GAMP has grown to its present size of a staff of 30 and over 600 students that include grades 5 through 12.

With a 97–100% college acceptance rate among each senior class and scholarships valued at over one to two million dollars yearly, GAMP continues to grow in stature within the city of Philadelphia.

The Concert Choir has performed for United States President Bill Clinton and Barack Obama, the Philadelphia Phillies, former Governor of Pennsylvania Ed Rendell, former Mayors of Philadelphia John Street and Michael Nutter, the inauguration for Mayor Jim Kenney, for the Philadelphia Eagles for Super Bowl LIX and alongside Grammy Award-winning singer Idina Menzel.

Additionally, students may participate in other sports (football, volleyball) through a partnership with South Philadelphia High School.