- Enrollment
- 1,348
- Students per teacher
- 12:1
- Resource Index
- 26/100
Middle school (grades 6-8) · Brooklyn, NY
Ms 51 William Alexander
Federal NCES profile for Ms 51 William Alexander, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 37/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 360009202226
👥 S:T ratio 45
📋 Attendance 30
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Ms 51 William Alexander earns 37/100 on the Resource Investment Index, with class sizes larger than 78% of New York schools. It is also more racially and ethnically mixed than most New York schools.
- #29 of 94
- middle schools in Brooklyn · Resource Index
- 37
- Resource Index · Typical
- 13.7:1
- large classes for New York
- 57.0%
- free-lunch eligible
Ms 51 William Alexander has class sizes larger than 78% of New York schools. Computed live against every New York school reporting to NCES.
By Resource Investment Index, Ms 51 William Alexander ranks #29 of 94 middle schools in Brooklyn, NY.
School address
District: New York City Geographic District #15 · New York
NCES ID 360009202226 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-63 students YoY
Ms 51 William Alexander shrank from 1,026 students in 2022-23 to 963 in 2023-24 (-6.1%).
Teacher FTE lost 76.0 → 65.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Shrinking CCD campus
-63 students YoY 360009202226 · Brooklyn, NY Middle · MID · TRAD
1,038 enr · 13.7:1 · 57.0% lunch · RII 37
Nearest enrollment peer: Sunset Park High School (1,348 students)
Ms 51 William Alexander shrank from 1,026 students in 2022-23 to 963 in 2023-24 (-6.1%). Teacher FTE lost 76.0 → 65.0 across the same CCD years. Read with this school → · District book → · New York schools → · Find another →
Ms 51 William Alexander in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Sunset Park Hi
Sunset Park High School
1,348 students
- Ps 321 William
Ps 321 William Penn
1,305 students
- This school
Ms 51 William Alexander
1,038 students
- Ps 230 Doris L
Ps 230 Doris L Cohen
925 students
- Ps 130 Parksid
Ps 130 Parkside (the)
891 students
- Brooklyn High
Brooklyn High School of the Arts
890 students
What this shows Ms 51 William Alexander reports 1,038 students on the CCD universe file.
How Ms 51 William Alexander compares
Ms 51 William Alexander is a shrinking campus on CCD: ratios and free-lunch share vs New York and U.S. means.
| Metric | This school | vs New York | New York avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 13.7:1 | ▲ 16% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 57.0% | ▲ 1% | 56.2% | 51.7% |
| Enrollment | 1,038 | top 8% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
13.7:1
Leaner classes than 60% of US schools, a middle-of-the-pack class size.
1,038
Bigger than 92% of US schools by enrollment, a large campus nationally.
Equity indicators methodology
Economic need
57.0%
free-lunch eligible
- 1% above the New York average of 56.2%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
13.7:1
students per teacher
- 16% above state mean
Top 78% in New York - lower ratio than 22% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
28.2%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Student demographics
Hispanic or Latino 32.1%
Asian 27.5%
White 25.9%
Two or More 7.1%
African American 7.0%
American Indian / Alaska Native 0.3%
Native Hawaiian / Pacific Islander 0.1%
Largest group: Hispanic or Latino at 32.1% of enrollment.
Student-body diversity index 74.4/100
Simpson diversity index - at 74.4, Ms 51 William Alexander is more mixed than the New York school average of 45.5.
How Ms 51 William Alexander Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Sunset Park High School | Larger | Higher economic need | Lower S:T ratio |
| Ps 321 William Penn | Larger | Lower economic need | Higher S:T ratio |
| Ps 230 Doris L Cohen | Similar size | Higher economic need | Similar S:T ratio |
| Ps 130 Parkside (the) | Similar size | Lower economic need | Higher S:T ratio |
| Brooklyn High School of the Arts | Similar size | Similar economic need | Similar S:T ratio |
Comparisons are relative to Ms 51 William Alexander's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,305
- Students per teacher
- 16.3:1
- Resource Index
- 53/100
- Enrollment
- 925
- Students per teacher
- 12.8:1
- Resource Index
- 24/100
- Enrollment
- 891
- Students per teacher
- 16.2:1
- Resource Index
- 35/100
- Enrollment
- 890
- Students per teacher
- 12.9:1
- Resource Index
- 24/100
Nationwide middle schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~1,038 students)
Frequently asked questions about Ms 51 William Alexander
How many students attend Ms 51 William Alexander?
Ms 51 William Alexander has 1,038 students enrolled. It is a middle school in Brooklyn, NY. CCD year-over-year: 1,026 (2022-23) → 963 (2023-24), down 63.
What is the student-teacher ratio at Ms 51 William Alexander?
The student-teacher ratio at Ms 51 William Alexander is 13.7:1, which is 16% higher than the New York average of 11.8:1 and 13% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Ms 51 William Alexander?
57.0% of students at Ms 51 William Alexander are eligible for free lunch, compared to the New York average of 56.2%.
What is the racial and ethnic makeup of Ms 51 William Alexander?
The largest demographic group at Ms 51 William Alexander is Hispanic or Latino at 32.1% of enrollment, in Brooklyn, NY. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 74.4/100.
What is the Resource Investment Index for Ms 51 William Alexander?
Ms 51 William Alexander has a Resource Investment Index of 37/100 (typical reported resources relative to schools nationally) based on 2 factors: student-teacher ratio, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology). Limited indicators were available, so the index reflects partial data.
How does Ms 51 William Alexander rank among middle schools in Brooklyn?
By Resource Investment Index, Ms 51 William Alexander ranks #29 of 94 middle schools in Brooklyn, NY. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Brooklyn on the city page.
What other schools are in New York City Geographic District #15?
Besides Ms 51 William Alexander, New York City Geographic District #15 also operates Sunset Park High School (1,348 students), Ps 321 William Penn (1,305 students), and Ps 230 Doris L Cohen (925 students). See the New York City Geographic District #15 district page for the complete list.