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Building 21

PHONE: (215) 400-7450 SCHOOL TYPE: Public District Citywide GRADES: 9-12 ENROLLMENT: 399

Fast Facts

  • Principal

    Mrs. Brianne MacNamara

  • Phone Number

    (215) 400-7450

  • Website

  • Neighborhood

    West Oak Lane

  • SEPTA Routes

    Bus (K, 6, 16, 22, 55)

  • Preschool/Daycare

Apply Now
  • Application Deadline


  • Tuition

  • Uniform


  • Extended Day


The mission of Building 21 is to empower networks of learners to discover their passion, connect with their purpose, and build agency to affect their world.

Points Of Pride

Experiential Learning: Building 21 students have the opportunity to explore their passions and interests through a number of partnerships with members of the local and citywide communities.

Our current industry partners include: Eat.Right.Now, Immersive XR, Jevs Human Services, Vetri Community Partnership, Sterling Baltimore, SMP Architects, Sean Tate, Penn State Extension

Our higher education partners include: Drexel University, LaSalle University, Orleans Technical College, Penn State University, Temple University, Villanova University, The University of the Arts, Community College of Philadelphia.

Other Points of Pride

  • Number of students attending school 95% or more increased 16%.
  • Number of students with ZERO out of school suspensions increased 7%.
  • Parent participation in SDP survey increased 16% from previous year.
  • Graduated our first senior class. 84% graduation rate

Admissions Policy

Admission is through a lottery based on space availability

Accreditations and Honors

Hours of Operation

Sun -
Mon8:15 AM - 3:15 PM
Tues8:15 AM - 3:15 PM
Wed8:15 AM - 1:30 PM
Thur8:15 AM - 3:15 PM
Fri8:15 AM - 3:15 PM
Sat -

Extended Programming Details

Entrance Instructions