- Enrollment
- 3,503
- Students per teacher
- 15.1:1
- Resource Index
- 40/100
Elementary school (grades K-5) · Brooklyn, NY
Ps 121 Nelson a Rockefeller
Federal NCES profile for Ps 121 Nelson a Rockefeller, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 44/100.
2024-25 NCES dataElementary school (grades K-5)NCES 360015202447
👥 S:T ratio 72
📋 Attendance 16
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Ps 121 Nelson a Rockefeller earns 44/100 on the Resource Investment Index, with class sizes smaller than 94% of New York schools. It is also more racially and ethnically mixed than most New York schools.
- #19 of 95
- elementary schools in Brooklyn · Resource Index
- 44
- Resource Index · Typical
- 7:1
- small classes for New York
- 71.0%
- free-lunch eligible
Ps 121 Nelson a Rockefeller has class sizes smaller than 94% of New York schools. Computed live against every New York school reporting to NCES.
By Resource Investment Index, Ps 121 Nelson a Rockefeller ranks #19 of 95 elementary schools in Brooklyn, NY.
School address
District: New York City Geographic District #21 · New York
NCES ID 360015202447 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-15 students YoY
Ps 121 Nelson a Rockefeller held near 299 students from 2022-23 to 2023-24 (-15 headcount).
Teacher FTE lost 42.9 → 40.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-15 students YoY 360015202447 · Brooklyn, NY Elementary · SMALL · TRAD
295 enr · 7:1 · 71.0% lunch · RII 44
Nearest enrollment peer: Edward R Murrow High School (3,503 students)
Ps 121 Nelson a Rockefeller held near 299 students from 2022-23 to 2023-24 (-15 headcount). Teacher FTE lost 42.9 → 40.0 across the same CCD years. Read with this school → · District book → · New York schools → · Find another →
Ps 121 Nelson a Rockefeller in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Edward R Murro
Edward R Murrow High School
3,503 students
- Abraham Lincol
Abraham Lincoln High School
2,210 students
- John Dewey Hig
John Dewey High School
2,209 students
- Is 228 David a
Is 228 David a Boody
1,555 students
- Is 98 Bay Acad
Is 98 Bay Academy
1,435 students
- This school 295
Ps 121 Nelson a Rockefeller
295 students
What this shows Ps 121 Nelson a Rockefeller reports 295 students on the CCD universe file.
How Ps 121 Nelson a Rockefeller compares
Ps 121 Nelson a Rockefeller held steady on CCD headcount: 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 | 7:1 | ▼ 41% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 71.0% | ▲ 26% | 56.2% | 51.7% |
| Enrollment | 295 | top 76% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
7:1
Leaner classes than 97% of US schools, among the more generously staffed nationally.
295
Bigger than 32% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
71.0%
free-lunch eligible
- 26% 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
7:1
students per teacher
- 41% below state mean
Top 6% in New York - lower ratio than 94% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
33.6%
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 35.3%
White 31.5%
Asian 24.7%
African American 4.1%
Two or More 3.1%
American Indian / Alaska Native 1.0%
Native Hawaiian / Pacific Islander 0.3%
Largest group: Hispanic or Latino at 35.3% of enrollment.
Student-body diversity index 71.2/100
Simpson diversity index - at 71.2, Ps 121 Nelson a Rockefeller is more mixed than the New York school average of 45.5.
How Ps 121 Nelson a Rockefeller Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Edward R Murrow High School | Larger | Similar economic need | Higher S:T ratio |
| Abraham Lincoln High School | Larger | Similar economic need | Higher S:T ratio |
| John Dewey High School | Larger | Higher economic need | Higher S:T ratio |
| Is 228 David a Boody | Larger | Similar economic need | Higher S:T ratio |
| Is 98 Bay Academy | Larger | Lower economic need | Higher S:T ratio |
Comparisons are relative to Ps 121 Nelson a Rockefeller's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,210
- Students per teacher
- 17.7:1
- Resource Index
- 29/100
- Enrollment
- 2,209
- Students per teacher
- 14.1:1
- Resource Index
- 22/100
- Enrollment
- 1,555
- Students per teacher
- 14:1
- Resource Index
- 33/100
- Enrollment
- 1,435
- Students per teacher
- 19.1:1
- Resource Index
- 25/100
Nationwide elementary 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 (~295 students)
Similar student-teacher ratio (~7:1)
Frequently asked questions about Ps 121 Nelson a Rockefeller
How many students attend Ps 121 Nelson a Rockefeller?
Ps 121 Nelson a Rockefeller has 295 students enrolled. It is an elementary school in Brooklyn, NY. CCD year-over-year: 314 (2022-23) → 299 (2023-24), nearly flat (-15).
What is the student-teacher ratio at Ps 121 Nelson a Rockefeller?
The student-teacher ratio at Ps 121 Nelson a Rockefeller is 7:1, which is 41% lower than the New York average of 11.8:1 and 55% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Ps 121 Nelson a Rockefeller?
71.0% of students at Ps 121 Nelson a Rockefeller are eligible for free lunch, compared to the New York average of 56.2%.
What is the racial and ethnic makeup of Ps 121 Nelson a Rockefeller?
The largest demographic group at Ps 121 Nelson a Rockefeller is Hispanic or Latino at 35.3% of enrollment, in Brooklyn, NY. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 71.2/100.
What is the Resource Investment Index for Ps 121 Nelson a Rockefeller?
Ps 121 Nelson a Rockefeller has a Resource Investment Index of 44/100 (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 Ps 121 Nelson a Rockefeller rank among elementary schools in Brooklyn?
By Resource Investment Index, Ps 121 Nelson a Rockefeller ranks #19 of 95 elementary 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 elementary schools in Brooklyn on the city page.
What other schools are in New York City Geographic District #21?
Besides Ps 121 Nelson a Rockefeller, New York City Geographic District #21 also operates Edward R Murrow High School (3,503 students), Abraham Lincoln High School (2,210 students), and John Dewey High School (2,209 students). See the New York City Geographic District #21 district page for the complete list.