Success Academy Charter School - Harlem 4
Grades K-8 · 240 WEST 113 STREET · Manhattan
William Loskoch, Principal · 646-442-6500
About
Success Academy Charter School - Harlem 4 is a K-8 charter school known for its exceptionally strong academic performance, consistently achieving proficiency rates in English Language Arts (87%) and Math (96%) that are well above the citywide 75th percentile. The school is part of the Success Academy network, recognized for its structured academic approach, high expectations, and data-driven instruction. Parents often praise the rigorous curriculum and the dedication of teachers, noting significant academic growth in their children. However, some families and observers describe the school's environment as highly demanding and strict, with a strong emphasis on discipline that can lead to a high-pressure experience for students. The school integrates arts, music, chess, and athletics into the regular school day, and students are required to wear uniforms. It shares a building with other schools.
Sources (21)
- Success Academy Charter School - Harlem 4 Official Data · 2023-2024
- Success Academy Charter School - Harlem 4 in New York, NY - Homes.com · 2026
- Success Academy Charter School - Harlem 4 in Manhattan, NY - Niche · 2026
- Best Schools in Success Academy Charter School-Harlem 4 & Rankings - SchoolDigger.com · 2024-2025
- 2026 Success Academy Charter School - Harlem 4 Rankings - Niche · 2026
- Success Academy Charter School - Harlem 4 · 2026
- Success Academy Harlem 4 Charter School - District 3 - InsideSchools · 2024-2025
- Charter Schools in Harlem, NY - Success Academy · 2026
- Success Academy Charter Schools · 2021
- Big Demands and High Expectations at Success Academy Schools - Edutopia · 2024
- Merit, Diversity, Equity, and Inclusion | Success Academy · 2025
- Parent Voices, Parent Choices - Success Academy · 2015
- We Asked Parents How We Were Doing, and Here's What They Had to Say · 2020
- Success Academy : r/nycparents - Reddit · 2024
- Gary Rubinstein's Blog: Success Academy Parents Speak Out. Part 1: “They Banned Me From Attending My Son's Graduation.” | National Education Policy Center · 2022
- Success Academy does 'screen' students, but not the way you might think - Chalkbeat · 2019
- Charter Middle Schools NYC - Imaginations in Motion - Success Academy · 2026
- schooldigger.com
- successacademies.org
- successacademies.org
- successacademies.org
Academics
State test proficiency rates and acceleration.
ELA proficiency
87%
Math proficiency
96%
Proficiency rates are from the Grade 3–8 NYS state test (school-level).
Attendance rate
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Avg class size (general ed)
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Avg class size (ICT)
—
Community & climate
Demographics, attendance, school survey results, and DOE quality ratings.
Quality signals
Overall positive % is averaged across every Pos/Neg survey question per respondent group (school year 2023-2024). Survey topics are the DOE’s framework measures (each the average favorable response across its questions; expand a topic to see them and the citywide average); the dimension scores themselves are no longer in the public data file.[3]
Operational health
Attendance
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Chronic absenteeism
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Suspension rate
0%
Student body
Race / ethnicity[4]
- Asian 3%
- Black 48%
- Hispanic 42%
- White 3%
- Multiracial 4%
School-level totals; may not sum to 100% due to rounding and small subgroup suppression.
Gender[4]
- Female 54%
- Male 46%
Female / male shares as published by the DOE; other gender identities aren’t reported in the source data.
Enrollment
380
Economic Need Index
87%
Free / reduced lunch
84%
English learners
6%
Students with IEPs
23%
Location & commute
Where the school is and how to get there.