Keystone Academy CS
4521 Longshore Avenue, Philadelphia, PA 19135
Public charter school (tuition-free)
Keystone Academy CS is a public charter school in Philadelphia, PA for grades K-8. It had 642 students in 2024-25, about 15.3 per teacher. As a public charter school it charges no tuition.
Contact Keystone Academy CS
School facts
- Grades
- K-8
- Students
- 642 (2024-25)
- Teachers (full-time equivalent)
- 42 (2024-25)
- Students per teacher
- 15.3
- Level
- Elementary
- School type
- Regular public school
- Tuition
- None (public charter school)
- County
- Philadelphia County
- NCES school ID
- 420076206103
From the U.S. Department of Education’s Common Core of Data: the public school directory 2025-26 (preliminary) for the address, phone, website, grades and authorizer; the 2024-25 membership and staff files for students and teachers. Figures move every year, so ask the school for today’s. NCES data files · Where our data comes from. Something wrong? Tell us.
What a charter school is
- Public and free. NCES describes a public charter school as a publicly funded school, usually run by a group or organization under a contract (the charter) with the state, the district or another body. The federal definition says a charter school does not charge tuition.
- Families choose it. Under the same definition, a charter school is one parents choose to send their children to, and it admits students by lottery when more apply than it has room for.
- No program badge. ChoiceFunded’s program badges and “schools that accept” lists cover private schools only. Charter schools are listed separately here, with no badge, and are never counted with private schools.
Sources: 20 U.S.C. 7221i (federal Charter Schools Program definitions); NCES, Condition of Education: Public Charter School Enrollment. Each state writes its own charter law, so ask the school how enrollment works there.
Other charter schools near Keystone Academy CS
- New Foundations CS (K-12, 1 mi)
- Mastery CS-Smedley Campus (K-6, 2 mi)
- Franklin Towne CHS (9-12, 2 mi)
- Maritime Academy CS (K-12, 2 mi)
- The Philadelphia CS for Arts and Sciences at HR Edmunds (K-8, 2 mi)
- First Philadelphia Preparatory CS (K-12, 2 mi)
- Northwood Academy CS (K-8, 3 mi)
- Franklin Towne Charter Elementary School (K-8, 3 mi)