MS 51 William Alexander vs Ps 321 William Penn
A head-to-head comparison of two schools in New York, United States, 534 m apart, using official American 2025 data. The better value in each row is highlighted.
MS 51 William Alexander
Brooklyn · Public middle · Grades 6–8
1,038 students
Ps 321 William Penn
Brooklyn · Public elementary · Grades PK–5
1,305 students
| Measure | MS 51 William Alexander Brooklyn, New York | Ps 321 William Penn Brooklyn, New York |
|---|---|---|
| Success Index (US) | 78 Top 25% | 88 Top 5% |
| State rank | #141 of 785 | #159 of 2,536 |
| National rank | #1897 of 15,369 | #1280 of 50,301 |
| Sector | Public | Public |
| Type | Middle | Elementary |
| Year range | Grades 6–8 | Grades PK–5 |
| Students | 1,038 | 1,305 |
| Enrollment | 1,038 | 1,305 |
| Free/reduced-price lunch | 60.2% | 5.9% |
| Students per teacher | 14.2 | 16.1 |
| Reading proficiency | 85% | 83% |
| Math proficiency | 83% | 87% |
| city | Brooklyn | Brooklyn |
| state | New York | New York |
| Website | – | – |
The verdict
- •Ps 321 William Penn scores higher on the Success Index (US) (88.1 vs 77.6).
- •Ps 321 William Penn does better on math proficiency (87% vs 83%).
- •MS 51 William Alexander does better on reading proficiency (85% vs 83%).
- •Ps 321 William Penn does better on community advantage (fewer free/reduced-price lunch) (5.9% vs 60.2%).
- •MS 51 William Alexander does better on students per teacher (14.2 vs 16.1).
- •Ps 321 William Penn is the larger school with 1,305 students compared with 1,038.
The Success Index (US) summarises published results and context from official data. It does not measure teaching quality or fit. Methodology.
Free academic assessment
Torn between two schools? Start with your child.
Whichever you choose, a free Success Tutoring assessment shows exactly where your child is in English and Maths and how to get ahead before the next school year.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Centres across NSW, VIC, QLD, WA, SA and ACT
Frequently asked questions
Is MS 51 William Alexander better than Ps 321 William Penn?
On the Success Index (US), Ps 321 William Penn ranks higher (88.1 vs 77.6 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 MS 51 William Alexander and Ps 321 William Penn?
About 534 m in a straight line, between Brooklyn and Brooklyn in New York.
Which has the better Enrollment?
MS 51 William Alexander: 1,038. Ps 321 William Penn: 1,305. Students enrolled in the latest NCES directory year.
How do MS 51 William Alexander and Ps 321 William Penn rank in New York?
MS 51 William Alexander is 141st of 785 and Ps 321 William Penn is 159th of 2,536 among middle schools in New York on the 2025 Success Index (US).