Achievement First Linden Charter School
Developing on Both MetricsBrooklyn · K-8 · DBN: 84K788 · Charter School
Location
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Address: 800 VAN SICLEN AVE, BROOKLYN, NY 11207
Grades Served: 0K,01,02,03,04
Principal: Mariama Diallo/Stephanie Blieka
Phone: 347-471-2700
Neighborhood: East New York
Council District: 42
2024-25 Metrics
Impact Score46%
Student growthnear median (50%)
Performance Score41%
Absolute outcomesbelow median (49%)
Economic Need Index86%
Poverty indicatornear median (87%)
Enrollment623
Students
Year-over-Year Change
Impact Score
2023-24
39%
2024-25
46%
Performance Score
2023-24
36%
2024-25
41%
Note: Year-over-year changes may reflect cohort differences, not actual school improvement.
Additional Metrics
Student Attendance: 91%
Teacher Attendance: 95%
Principal Tenure: 4.5 years
Teachers 3+ Years: 80%
Instruction Rating: Fair
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