- Enrollment
- 469
- Students per teacher
- 12.3:1
- Resource Index
- 25/100
Other / mixed grade configuration · Brooklyn, NY
Ps 21 Crispus Attucks
Federal NCES profile for Ps 21 Crispus Attucks, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 22/100.
2024-25 NCES dataOther / mixed grade configurationNCES 360009402108
👥 S:T ratio 44
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Ps 21 Crispus Attucks earns 22/100 on the Resource Investment Index, with class sizes larger than 79% of New York schools.
- #202 of 262
- schools in Brooklyn · Resource Index
- 22
- Resource Index · Lower
- 13.9:1
- large classes for New York
- 77.7%
- free-lunch eligible
Ps 21 Crispus Attucks has class sizes larger than 79% of New York schools. Computed live against every New York school reporting to NCES.
By Resource Investment Index, Ps 21 Crispus Attucks ranks #202 of 262 schools in Brooklyn, NY.
School address
District: New York City Geographic District #16 · New York
NCES ID 360009402108 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-11 students YoY
Ps 21 Crispus Attucks held near 459 students from 2022-23 to 2023-24 (-11 headcount).
Teacher FTE held 31.6 → 31.8 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-11 students YoY 360009402108 · Brooklyn, NY Other · SMALL · TRAD
430 enr · 13.9:1 · 77.7% lunch · RII 22
Nearest enrollment peer: Brooklyn High School for Law and Technology (469 students)
Ps 21 Crispus Attucks held near 459 students from 2022-23 to 2023-24 (-11 headcount). Teacher FTE held 31.6 → 31.8 across the same CCD years. Read with this school → · District book → · New York schools → · Find another →
Ps 21 Crispus Attucks in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Brooklyn High
Brooklyn High School for Law and Technology
469 students
- Ps 40 George W
Ps 40 George W Carver
465 students
- This school
Ps 21 Crispus Attucks
430 students
- Boys and Girls
Boys and Girls High School
353 students
- Brooklyn Brown
Brooklyn Brownstone School
352 students
- Brooklyn Acade
Brooklyn Academy of Global Finance (the)
222 students
What this shows Ps 21 Crispus Attucks reports 430 students on the CCD universe file.
How Ps 21 Crispus Attucks compares
Ps 21 Crispus Attucks held steady on CCD headcount: ratios and free-lunch share vs New York and U.S. means.
| Metric | This school | vs New York | New York avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 13.9:1 | ▲ 18% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 77.7% | ▲ 38% | 56.2% | 51.7% |
| Enrollment | 430 | top 49% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
13.9:1
Leaner classes than 58% of US schools, a middle-of-the-pack class size.
430
Bigger than 52% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
77.7%
free-lunch eligible
- 38% above the New York average of 56.2%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
13.9:1
students per teacher
- 18% above state mean
Top 79% in New York - lower ratio than 21% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
67.9%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Student demographics
African American 83.5%
Hispanic or Latino 14.4%
White 0.9%
Two or More 0.7%
American Indian / Alaska Native 0.5%
Largest group: African American at 83.5% of enrollment.
Student-body diversity index 28.2/100
Simpson diversity index - at 28.2, Ps 21 Crispus Attucks is less mixed than the New York school average of 45.5.
How Ps 21 Crispus Attucks Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Brooklyn High School for Law and Technology | Similar size | Similar economic need | Lower S:T ratio |
| Ps 40 George W Carver | Similar size | Higher economic need | Lower S:T ratio |
| Boys and Girls High School | Similar size | Similar economic need | Lower S:T ratio |
| Brooklyn Brownstone School | Similar size | Lower economic need | Higher S:T ratio |
| Brooklyn Academy of Global Finance (the) | Smaller | Higher economic need | Lower S:T ratio |
Comparisons are relative to Ps 21 Crispus Attucks's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 465
- Students per teacher
- 11.6:1
- Resource Index
- 27/100
- Enrollment
- 353
- Students per teacher
- 7.5:1
- Resource Index
- 35/100
- Enrollment
- 352
- Students per teacher
- 17.6:1
- Resource Index
- 23/100
- Enrollment
- 222
- Students per teacher
- 10.1:1
- Resource Index
- 30/100
Nationwide other schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~430 students)
Frequently asked questions about Ps 21 Crispus Attucks
How many students attend Ps 21 Crispus Attucks?
Ps 21 Crispus Attucks has 430 students enrolled. It is a public school in Brooklyn, NY. CCD year-over-year: 470 (2022-23) → 459 (2023-24), nearly flat (-11).
What is the student-teacher ratio at Ps 21 Crispus Attucks?
The student-teacher ratio at Ps 21 Crispus Attucks is 13.9:1, which is 18% higher than the New York average of 11.8:1 and 11% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Ps 21 Crispus Attucks?
77.7% of students at Ps 21 Crispus Attucks are eligible for free lunch, compared to the New York average of 56.2%.
What is the racial and ethnic makeup of Ps 21 Crispus Attucks?
The largest demographic group at Ps 21 Crispus Attucks is African American at 83.5% of enrollment, in Brooklyn, NY.
What is the Resource Investment Index for Ps 21 Crispus Attucks?
Ps 21 Crispus Attucks has a Resource Investment Index of 22/100 (lower reported resources relative to schools nationally) based on 2 factors: student-teacher ratio, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology). Limited indicators were available, so the index reflects partial data.
How does Ps 21 Crispus Attucks rank among schools in Brooklyn?
By Resource Investment Index, Ps 21 Crispus Attucks ranks #202 of 262 schools in Brooklyn, NY. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Brooklyn on the city page.
What other schools are in New York City Geographic District #16?
Besides Ps 21 Crispus Attucks, New York City Geographic District #16 also operates Brooklyn High School for Law and Technology (469 students), Ps 40 George W Carver (465 students), and Boys and Girls High School (353 students). See the New York City Geographic District #16 district page for the complete list.