P.S. 121 Nelson A. Rockefeller (21K121) is a public school in District 21, Borough Park, Brooklyn, serving grades K–8. In 2026, 57% of tested students were proficient in reading and 59% were proficient in math (NYC DOE). Enrollment was 287 students in 2025–26 (NYC DOE). The average K–5 class size was 13.8 students in 2025–26 (NYC DOE).
Visit school websiteThe one thing to remember
2026 reading proficiency is 57%, about typical for NYC elementary schools and higher than most of those with similar economic need; down 10 points from 2025; reading is down 8 points since 2023, while citywide reading fell 2 points.
Also worth knowing: In 2026, students in special education scored 43% in reading (37 tested), compared with 57% schoolwide.
99%
of parents trust the principal
97%
trust their child's teachers
95%
satisfied with the education overall
NYC School Survey 2026. 92% of families answered.
Students here gain about as much as at other schools serving similar students
Impact score: 0.54 · 62nd percentile
The DOE compares results with those of students with similar starting points and backgrounds.
View this school's official NYC DOE School Quality SnapshotReading
57%
students scored at Level 3 or 4
170 students tested
37 students tested
133 students tested
Mathematics
59%
students scored at Level 3 or 4
170 students tested
36 students tested
134 students tested
Excludes charter schools. Weighted by students tested.
New York changed its grades 3–8 tests in 2023. Compare years from 2023 onward with each other, not with earlier years.
Citywide reading scores fell sharply in 2026; NYC Public Schools is reviewing the results. Source: NYC Public Schools
| Year | Reading | Math |
|---|---|---|
| 2018 | 59% | 58% |
| 2019 | 56% | 61% |
| 2022 | 60% | 46% |
| 2023 | 65% | 59% |
| 2024 | 54% | 64% |
| 2025 | 67% | 67% |
| 2026 | 57% | 59% |
Proficiency means scoring at Level 3 or above. Test scores are one measure of a school, not the whole experience.
Economic need index: 77%
Economic need index: 88%1.0 mi away
Economic need index: 76%1.4 mi away
Economic need index: 88%1.2 mi away
Economic need index: 84%0.5 mi away
Economic need index: 85%0.7 mi away
Economic need index: 83%1.1 mi away
Economic need index: 82%0.9 mi away
Economic need index: 86%1.5 mi away
Economic need index: 88%1.0 mi away
Economic need index: 76%1.4 mi away
Economic need index: 77%
Economic need index: 84%0.5 mi away
Economic need index: 82%0.9 mi away
Economic need index: 83%1.1 mi away
Economic need index: 85%0.7 mi away
Economic need index: 88%1.2 mi away
Economic need index: 86%1.5 mi away
| Measure | P.S. 121 Nelson A. Rockefeller | P.S. 192 - The Magnet School for Math and Science Inquiry |
|---|---|---|
| 2026 reading proficient | 57% (-10 points vs 2025) | 46% (-15 points vs 2025) |
| 2026 math proficient | 59% (-7 points vs 2025) | 55% (-3 points vs 2025) |
| Average K–5 class size (2025–26) | 13.8 | 19.4 |
| Enrollment (2025–26) | 287 | 596 |
| Student–teacher ratio (2025–26) | 6.1 | 10.3 |
| Family satisfaction (2026) | 95% | 97% |
| Principal trust (2026) | 99% | 99% |
| Teacher trust (2026) | 97% | 98% |
| Leadership (2026) | 99% | 98% |
| Distance between schools | 0.4 mi | |
P.S. 121 Nelson A. Rockefeller has higher reading proficiency than P.S. 192 - The Magnet School for Math and Science Inquiry (57% vs 46%).
Enrollment
287 students
K–8 · about the same over five years
NYC DOE · 2025–26
Class size
13.8
children in the average K–5 class; about 6.1 students per teacher (2025–26)
NYC DOE · 2025–26
English learners
26%
was 32% in 2024–25
NYC DOE · 2025–26
Economic need
76% of students live in poverty (2025–26)
Economic need index: 77% — the measure we use to compare similar schools.
NYC DOE · 2025–26
Special education
28%
of students here are in special education
NYC DOE · 2025–26
Student body: 32% White, 35% Hispanic, 25% Asian, 5% Black, 3% multiracial, 46% female, 54% male.
Economic need index: 77% — the measure we use to compare similar schools. It combines measures of students’ economic circumstances; it is not a measure of school quality.
NYC DOE · 2026 survey
NYC DOE · 2024–25
Admissions for NYC public schools go through MySchools. Check the attendance zone shown above; zones can change and do not guarantee a seat.
5301 20 Avenue
Source: NYC DOE / NYSED, 2026 · School information · View this school's official NYC DOE School Quality Snapshot
Admissions for NYC public schools go through MySchools.