Mark Twain IS 239 for the Gifted and Talented (21K239) is a public school in District 21, Coney Island, Brooklyn, serving grades 6–8. In 2026, 91% of tested students were proficient in reading and 93% were proficient in math (NYC DOE). Enrollment was 1319 students in 2025–26 (NYC DOE).
Visit school websiteThe one thing to remember
2026 reading (91%) and math (93%) proficiency are both higher than most NYC middle schools, including those with similar economic need.
Also worth knowing: In 2026, students in special education scored 66% in reading (122 tested), compared with 91% schoolwide.
96%
of parents trust the principal
93%
trust their child's teachers
93%
satisfied with the education overall
NYC School Survey 2026. 43% of families answered — treat as a partial picture.
Students here gain more than at most schools serving similar students
Impact score: 0.6 · 88th 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
91%
students scored at Level 3 or 4
1229 students tested
122 students tested
1107 students tested
Mathematics
93%
students scored at Level 3 or 4
1158 students tested
113 students tested
1045 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 | 94% | 90% |
| 2019 | 91% | 89% |
| 2022 | 91% | 80% |
| 2023 | 88% | 84% |
| 2024 | 87% | 90% |
| 2025 | 93% | 93% |
| 2026 | 91% | 93% |
Proficiency means scoring at Level 3 or above. Test scores are one measure of a school, not the whole experience.
Economic need index: 42%
Economic need index: 70%1.7 mi away
Economic need index: 78%1.0 mi away
Economic need index: 76%1.5 mi away
Economic need index: 89%1.1 mi away
Economic need index: 79%1.1 mi away
Economic need index: 76%1.7 mi away
Economic need index: 86%1.8 mi away
Economic need index: >95%0.3 mi away
Economic need index: 42%
Economic need index: 76%1.5 mi away
Economic need index: 70%1.7 mi away
Economic need index: 79%1.1 mi away
Economic need index: 76%1.7 mi away
Economic need index: 89%1.1 mi away
Economic need index: 78%1.0 mi away
Economic need index: 86%1.8 mi away
Economic need index: >95%0.3 mi away
| Measure | Mark Twain Is 239 for the Gifted and Talented | P.S. 288 The Shirley Tanyhill |
|---|---|---|
| 2026 reading proficient | 91% (-2 points vs 2025) | 30% (+2 points vs 2025) |
| 2026 math proficient | 93% (0 points vs 2025) | 35% (+10 points vs 2025) |
| Enrollment (2025–26) | 1319 | 413 |
| Student–teacher ratio (2025–26) | 16.9 | 11.5 |
| Family satisfaction (2026) | 93% | 81% |
| Principal trust (2026) | 96% | 90% |
| Teacher trust (2026) | 93% | 89% |
| Leadership (2026) | 96% | 86% |
| Distance between schools | 0.3 mi | |
Mark Twain Is 239 for the Gifted and Talented has higher reading proficiency than P.S. 288 The Shirley Tanyhill (91% vs 30%) and higher math proficiency (93% vs 35%).
Enrollment
1319 students
6–8 · down 44 over five years
NYC DOE · 2025–26
Students per teacher
16.9
students per teacher
NYC DOE · 2025–26
English learners
1%
was 1% in 2024–25
NYC DOE · 2025–26
Economic need
40% of students live in poverty (2025–26)
Economic need index: 42% — the measure we use to compare similar schools.
NYC DOE · 2025–26
Special education
11%
of students here are in special education
NYC DOE · 2025–26
Student body: 39% White, 10% Hispanic, 38% Asian, 8% Black, 6% multiracial, 56% female, 44% male.
Economic need index: 42% — 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. This school has no attendance zone; admission is through MySchools.
2401 Neptune Ave, Brooklyn, NY 11224, 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.