M.S. 255 Salk School of Science
Lower Economic NeedManhattan · Middle · DBN: 02M2550
Location
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Address: 320 EAST 20 STREET, MANHATTAN, NY 10003
Grades Served: 60708
Principal: Marsha Wallace
Phone: 212-614-8785
Neighborhood: Gramercy
Council District: 2
2024-25 Metrics
Impact Score49%
Student growthnear median (50%)
Performance Score86%
Absolute outcomesabove median (49%)
Economic Need Index21%
Poverty indicatorbelow median (87%)
Enrollment378
Students
Year-over-Year Change
Impact Score
2023-24
56%
2024-25
49%
Performance Score
2023-24
97%
2024-25
86%
Note: Year-over-year changes may reflect cohort differences, not actual school improvement.
Additional Metrics
Student Attendance: 95%
Teacher Attendance: 96%
Principal Tenure: 0.1 years
Teachers 3+ Years: 78%
Instruction Rating: Excellent
Safety Rating: Excellent
Families Rating: Good
Survey Results (% Positive)
Instruction/Learning: 86%
Safety: 77%
School Leadership: 95%
Student Support: 74%
Communication: 93%
Family Involvement: 88%
Family-School Trust: 98%
Survey results reflect responses from families, teachers, and students. Higher percentages indicate more positive responses.
Budget (Fair Student Funding)
| Year | Total Budget | FSF Allocation | % Funded | Gap to 100% |
|---|---|---|---|---|
| 2024-25 | $6,501,278 | $5,216,308 | 100% | $0 |
| 2023-24 | $5,855,874 | $4,679,581 | 100% | $0 |
| 2022-23 | $5,535,590 | $4,473,202 | 100% | $0 |
PTA Financial Summary
| Year | Beginning Balance | Income | Expenses | Ending Balance |
|---|---|---|---|---|
| 2024-25 | $475,283 | $123,194 | $192,939 | $356,758 |
| 2023-24 | $475,283 | $123,194 | $192,939 | $356,758 |
| 2022-23 | $435,342 | $57,814 | $67,426 | $425,730 |
PTA income primarily reflects parent wealth, not school quality. Some schools have very active PTAs while others raise very little.
Discipline (Suspensions)
| Year | Removals | Principal Susp. | Supt. Susp. | Total |
|---|---|---|---|---|
| 2024-25 | Redacted | 11 | Redacted | Redacted |
| 2023-24 | Redacted | Redacted | Redacted | 7 |
| 2022-23 | Redacted | 20 | Redacted | 26 |
"Redacted" indicates small counts (1-5) suppressed for privacy. Suspension data reflects systemic patterns as much as individual school decisions. Always consider ENI context.
Similar Schools
Schools with similar Economic Need (±5%) and enrollment (±20%)
Data Limitations
- Only 2 years of Impact Score data available (2023-24, 2024-25)
- Impact Score methodology not fully disclosed by NYC DOE
- Cannot determine causation - only patterns and correlations
- No student mobility data (selection effects cannot be ruled out)
- Many schools change category year-over-year