P.S. 21 Margaret Emery-Elm Park (31R021) is a public school in District 31, Port Richmond, Staten Island, serving grades pre-K, K–5. In 2026, 51% of tested students were proficient in reading and 60% were proficient in math (NYC DOE). Enrollment was 364 students in 2025–26 (NYC DOE). The average K–5 class size was 22.5 students in 2025–26 (NYC DOE).
Visit school websiteThe one thing to remember
2026 reading proficiency is 51%, about typical for NYC elementary schools and higher than most of those with similar economic need; down 11 points from 2025.
Also worth knowing: Average class size (2025–26) is 22.5, larger than most NYC elementary schools.
97%
of parents trust the principal
97%
trust their child's teachers
94%
satisfied with the education overall
NYC School Survey 2026. 54% of families answered.
Students here gain about as much as at other schools serving similar students
Impact score: 0.53 · 56th 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
51%
students scored at Level 3 or 4
132 students tested
30 students tested
102 students tested
Mathematics
60%
students scored at Level 3 or 4
139 students tested
34 students tested
105 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 | 37% | 28% |
| 2019 | 44% | 40% |
| 2022 | 53% | 38% |
| 2023 | 50% | 58% |
| 2024 | 60% | 65% |
| 2025 | 62% | 61% |
| 2026 | 51% | 60% |
Proficiency means scoring at Level 3 or above. Test scores are one measure of a school, not the whole experience.
Economic need index: 39%1.1 mi away
Economic need index: 67%1.3 mi away
Economic need index: 85%
Economic need index: 87%0.8 mi away
Economic need index: 81%0.5 mi away
Economic need index: 77%0.4 mi away
Economic need index: 90%0.7 mi away
Economic need index: 91%1.5 mi away
Economic need index: 93%0.7 mi away
Economic need index: 39%1.1 mi away
Economic need index: 67%1.3 mi away
Economic need index: 85%
Economic need index: 81%0.5 mi away
Economic need index: 87%0.8 mi away
Economic need index: 77%0.4 mi away
Economic need index: 90%0.7 mi away
Economic need index: 93%0.7 mi away
Economic need index: 91%1.5 mi away
| Measure | P.S. 21 Margaret Emery-Elm Park | Port Richmond School for Visionary Learning |
|---|---|---|
| 2026 reading proficient | 51% (-11 points vs 2025) | 33% (-11 points vs 2025) |
| 2026 math proficient | 60% (-2 points vs 2025) | 39% (+11 points vs 2025) |
| Average K–5 class size (2025–26) | 22.5 | 22.5 |
| Enrollment (2025–26) | 364 | 380 |
| Student–teacher ratio (2025–26) | 8.8 | 11.2 |
| Family satisfaction (2026) | 94% | 96% |
| Principal trust (2026) | 97% | 97% |
| Teacher trust (2026) | 97% | 99% |
| Leadership (2026) | 96% | 98% |
| Distance between schools | 0.4 mi | |
P.S. 21 Margaret Emery-Elm Park has higher reading proficiency than Port Richmond School for Visionary Learning (51% vs 33%) and higher math proficiency (60% vs 39%).
Enrollment
364 students
pre-K, K–5 · down 19 over five years
NYC DOE · 2025–26
Class size
22.5
children in the average K–5 class; about 8.8 students per teacher (2025–26)
NYC DOE · 2025–26
English learners
19%
was 21% in 2024–25
NYC DOE · 2025–26
Economic need
90% of students live in poverty (2025–26)
Economic need index: 85% — the measure we use to compare similar schools.
NYC DOE · 2025–26
Special education
36%
of students here are in special education
NYC DOE · 2025–26
Student body: 10% White, 66% Hispanic, 6% Asian, 15% Black, 2% multiracial, 53% female, 47% male.
Economic need index: 85% — 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.
168 Hooker Pl, Staten Island, NY 10302, 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.