P.S. 503: The School of Discovery (20K503) is a public school in District 20, Sunset Park, Brooklyn, serving grades K–5. In 2026, 47% of tested students were proficient in reading and 58% were proficient in math (NYC DOE). Enrollment was 549 students in 2025–26 (NYC DOE). The average K–5 class size was 20.6 students in 2025–26 (NYC DOE).
Visit school websiteThe one thing to remember
2026 math proficiency is 58%, about typical for NYC elementary schools and higher than most of those with similar economic need; math is up 13 points since 2023, while citywide math rose 6 points.
Also worth knowing: In 2026, students in special education scored 27% in reading (56 tested), compared with 47% schoolwide.
97%
of parents trust the principal
97%
trust their child's teachers
95%
satisfied with the education overall
NYC School Survey 2026. 93% of families answered.
Students here gain about as much as at other schools serving similar students
Impact score: 0.56 · 66th 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
47%
students scored at Level 3 or 4
219 students tested
56 students tested
163 students tested
Mathematics
58%
students scored at Level 3 or 4
230 students tested
58 students tested
172 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 | 30% | 43% |
| 2019 | 36% | 45% |
| 2022 | 39% | 28% |
| 2023 | 46% | 45% |
| 2024 | 43% | 55% |
| 2025 | 57% | 56% |
| 2026 | 47% | 58% |
Proficiency means scoring at Level 3 or above. Test scores are one measure of a school, not the whole experience.
Economic need index: 60%0.7 mi away
Economic need index: 83%0.9 mi away
Economic need index: 79%0.8 mi away
Economic need index: 89%0.8 mi away
Economic need index: 90%
Economic need index: 85%0.1 mi away
Economic need index: 82%0.6 mi away
Economic need index: 87%0.2 mi away
Economic need index: 94%0.01 mi away
Economic need index: 83%0.9 mi away
Economic need index: 79%0.8 mi away
Economic need index: 89%0.8 mi away
Economic need index: 60%0.7 mi away
Economic need index: 85%0.1 mi away
Economic need index: 90%
Economic need index: 82%0.6 mi away
Economic need index: 87%0.2 mi away
Economic need index: 94%0.01 mi away
| Measure | P.S. 503: The School of Discovery | P.S. 506: The School of Journalism & Technology |
|---|---|---|
| 2026 reading proficient | 47% (-10 points vs 2025) | 30% (-11 points vs 2025) |
| 2026 math proficient | 58% (+2 points vs 2025) | 43% (+1 points vs 2025) |
| Average K–5 class size (2025–26) | 20.6 | 15.2 |
| Enrollment (2025–26) | 549 | 269 |
| Student–teacher ratio (2025–26) | 7.8 | 6.2 |
| Family satisfaction (2026) | 95% | 93% |
| Principal trust (2026) | 97% | 97% |
| Teacher trust (2026) | 97% | 98% |
| Leadership (2026) | 98% | 98% |
| Distance between schools | 0.01 mi | |
P.S. 503: The School of Discovery has higher reading proficiency than P.S. 506: The School of Journalism & Technology (47% vs 30%) and higher math proficiency (58% vs 43%).
Enrollment
549 students
K–5 · down 300 over five years
NYC DOE · 2025–26
Class size
20.6
children in the average K–5 class; about 7.8 students per teacher (2025–26)
NYC DOE · 2025–26
English learners
58%
was 59% in 2024–25
NYC DOE · 2025–26
Economic need
>95% of students live in poverty (2025–26)
Economic need index: 90% — the measure we use to compare similar schools.
NYC DOE · 2025–26
Special education
34%
of students here are in special education
NYC DOE · 2025–26
Student body: 8% White, 76% Hispanic, 15% Asian, 0% Black, 1% multiracial, 48% female, 52% male.
Economic need index: 90% — 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.
330 59th St, Brooklyn, NY 11220, USA
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.