Enrollment
295
New York · 2024-25 NCES data
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 39/100.
2024-25 NCES dataElementary school (grades K-5)NCES 360015202447
👥 S:T ratio 72
🌟 Gifted program 30
📋 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 39/100 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
- 39
- 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 →
Teachers (FTE)
42.0
Federal CCD staff survey
Students per teacher
7:1
vs 11.8:1 New York avg
-41% vs state
Free-lunch eligible
71.0%
vs 56.2% New York avg
+26% vs state
Student-teacher ratio in context
How Ps 121 Nelson a Rockefeller compares with New York and U.S. medians
What stands out at Ps 121 Nelson a Rockefeller
Ps 121 Nelson a Rockefeller is a higher-need, mid-sized elementary school in Brooklyn, New York, enrolling 295 students.
Classes run notably small here: at 7:1, Ps 121 Nelson a Rockefeller is leaner than roughly 94% of New York schools and 41% under the state's 11.8:1 norm, more adult attention per pupil than most peers.
Economic need runs somewhat above the state's typical profile, with 71.0% of students eligible for free meals.
Enrollment of 295 puts it in the smaller third of New York schools by headcount.
Its Resource Investment Index lands in the upper third of 4,801 scored New York schools.
Against 495 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #71.
Its student body is led by Hispanic or Latino (35%) and White (32%), more mixed than most schools in the state (diversity index 71/100).
Chronic absenteeism is elevated: 33.6% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
New York City Geographic District #21 also operates Edward R Murrow High School (3,503 students) and Abraham Lincoln High School (2,210 students) alongside Ps 121 Nelson a Rockefeller.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Ps 121 Nelson a Rockefeller compares
Ps 121 Nelson a Rockefeller on the metrics families compare, against 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 (what these measure)
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.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
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
- 3,503
- Students per teacher
- 15.1:1
- Resource Index
- 40/100
- 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
Similar elementary schools statewide
Matched by enrollment size and by staffing ratio across all of New York, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~295 students)
Next steps
Verify locally before acting on Ps 121 Nelson a Rockefeller's federal record.
- Compare Ps 121 Nelson a Rockefeller against another school. Compare schools
- New York City Geographic District #21's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
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.
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 39/100 (typical reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
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.
Is Ps 121 Nelson a Rockefeller a good school?
Ps 121 Nelson a Rockefeller earns 39/100 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. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
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.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.