Public charter school
Keystone Academy CS
Illustrative campus background
- Students
- 642
- Grades
- K–8
- Students per teacher
- 15.3
- Free or reduced-price lunch
- 91%
Keystone Academy CS school details
- Address
- 4521 Longshore Avenue, Philadelphia, PA 19135
- Phone
- (215) 332-2111
- District or network
- Keystone Academy CS
- Format
- In person
- Community
- Large city
- School lunch program
- Community Eligibility Provision (CEP)
- Status (2024–25)
- Open
- NCES school ID
- 420076206103
Source: NCES Common Core of Data, 2024–25 school year, accessed 2026-09-14. Students per teacher is not class size. Details can change; confirm enrollment, meals and admissions directly with the school. How this data works.
Frequently asked questions about Keystone Academy CS
Is Keystone Academy CS a public charter school?
Yes. Keystone Academy CS is listed as an open public charter school in the NCES Common Core of Data for the 2024–25 school year.
What grades does Keystone Academy CS serve?
Keystone Academy CS reports serving grades K–8.
How many students attend Keystone Academy CS?
Keystone Academy CS reported enrollment of 642 students for 2024–25. Enrollment can change, so confirm current figures with the school.
Where is Keystone Academy CS located?
Keystone Academy CS is located at 4521 Longshore Avenue, Philadelphia, PA 19135.
How can I compare Keystone Academy CS with nearby charter schools?
Review the reported grades, enrollment, students per teacher, and format on this page, then use the nearby-school and Philadelphia links to compare other public charter schools. Confirm current programs and admissions directly with each school.
More charter schools in Philadelphia and Pennsylvania.