Keystone Academy CS vs Mayfair Sch
A head-to-head comparison of two elementary schools in Pennsylvania, United States, 1.5 km apart, using official American 2025 data. The better value in each row is highlighted.
Keystone Academy CS
Philadelphia · Charter elementary · Grades K–8
642 students
Mayfair Sch
Philadelphia · Public elementary · Grades K–8
1,763 students
| Measure | Keystone Academy CS Philadelphia, Pennsylvania | Mayfair Sch Philadelphia, Pennsylvania |
|---|---|---|
| Success Index (US) | 46 Lower 50% | 28 Lower 50% |
| State rank | #1067 of 1,627 | #1340 of 1,627 |
| National rank | #27968 of 50,301 | #40038 of 50,301 |
| Sector | Charter | Public |
| Type | Elementary | Elementary |
| Year range | Grades K–8 | Grades K–8 |
| Students | 642 | 1,763 |
| Enrollment | 642 | 1,763 |
| Free/reduced-price lunch | 91% | 95.7% |
| Students per teacher | 15.3 | 17.1 |
| Reading proficiency | 69% | 47% |
| Math proficiency | 38% | 31% |
| city | Philadelphia | Philadelphia |
| state | Pennsylvania | Pennsylvania |
| Website | – | – |
The verdict
- •Keystone Academy CS scores higher on the Success Index (US) (45.9 vs 27.6).
- •Keystone Academy CS does better on math proficiency (38% vs 31%).
- •Keystone Academy CS does better on reading proficiency (69% vs 47%).
- •Keystone Academy CS does better on community advantage (fewer free/reduced-price lunch) (91% vs 95.7%).
- •Keystone Academy CS does better on students per teacher (15.3 vs 17.1).
- •Mayfair Sch is the larger school with 1,763 students compared with 642.
- •Keystone Academy CS is a charter school while Mayfair Sch is a public school, so fees and admission rules differ.
The Success Index (US) summarises published results and context from official data. It does not measure teaching quality or fit. Methodology.
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Frequently asked questions
Is Keystone Academy CS better than Mayfair Sch?
On the Success Index (US), Keystone Academy CS ranks higher (45.9 vs 27.6 out of 100). The index is built from published results and context data, not from teaching quality or fit, so visit both schools before deciding.
How far apart are Keystone Academy CS and Mayfair Sch?
About 1.5 km in a straight line, between Philadelphia and Philadelphia in Pennsylvania.
Which has the better Enrollment?
Keystone Academy CS: 642. Mayfair Sch: 1,763. Students enrolled in the latest NCES directory year.
How do Keystone Academy CS and Mayfair Sch rank in Pennsylvania?
Keystone Academy CS is 1067th of 1,627 and Mayfair Sch is 1340th of 1,627 among elementary schools in Pennsylvania on the 2025 Success Index (US).