- Enrollment
- 3,503
- Students per teacher
- 15.1:1
- Resource Index
- 40/100
Other / mixed grade configuration · Brooklyn, NY
Ps 99 Isaac Asimov
Federal NCES profile for Ps 99 Isaac Asimov, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 20/100.
2024-25 NCES dataOther / mixed grade configurationNCES 360015202377
👥 S:T ratio 40
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Ps 99 Isaac Asimov earns 20/100 on the Resource Investment Index, with class sizes larger than 86% of New York schools. It is also more racially and ethnically mixed than most New York schools.
- #224 of 262
- schools in Brooklyn · Resource Index
- 20
- Resource Index · Lower
- 14.9:1
- large classes for New York
- 80.6%
- free-lunch eligible
Ps 99 Isaac Asimov has class sizes larger than 86% of New York schools. Computed live against every New York school reporting to NCES.
By Resource Investment Index, Ps 99 Isaac Asimov ranks #224 of 262 schools in Brooklyn, NY.
School address
District: New York City Geographic District #21 · New York
NCES ID 360015202377 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+27 students YoY
Ps 99 Isaac Asimov held near 831 students from 2022-23 to 2023-24 (+27 headcount).
Teacher FTE added 58.0 → 64.2 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+27 students YoY 360015202377 · Brooklyn, NY Other · MID · TRAD
847 enr · 14.9:1 · 80.6% lunch · RII 20
Nearest enrollment peer: Edward R Murrow High School (3,503 students)
Ps 99 Isaac Asimov held near 831 students from 2022-23 to 2023-24 (+27 headcount). Teacher FTE added 58.0 → 64.2 across the same CCD years. Read with this school → · District book → · New York schools → · Find another →
Ps 99 Isaac Asimov in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Edward R Murro
Edward R Murrow High School
3,503 students
- Abraham Lincol
Abraham Lincoln High School
2,210 students
- John Dewey Hig
John Dewey High School
2,209 students
- Is 228 David a
Is 228 David a Boody
1,555 students
- Is 98 Bay Acad
Is 98 Bay Academy
1,435 students
- This school 847
Ps 99 Isaac Asimov
847 students
What this shows Ps 99 Isaac Asimov reports 847 students on the CCD universe file.
How Ps 99 Isaac Asimov compares
Ps 99 Isaac Asimov 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 | 14.9:1 | ▲ 26% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 80.6% | ▲ 43% | 56.2% | 51.7% |
| Enrollment | 847 | top 12% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14.9:1
Leaner classes than 48% of US schools, a middle-of-the-pack class size.
847
Bigger than 87% of US schools by enrollment, a large campus nationally.
Equity indicators methodology
Economic need
80.6%
free-lunch eligible
- 43% 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
14.9:1
students per teacher
- 26% above state mean
Top 86% in New York - lower ratio than 14% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
45.2%
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
Asian 45.5%
White 29.3%
Hispanic or Latino 18.9%
African American 3.8%
American Indian / Alaska Native 1.2%
Two or More 0.8%
Native Hawaiian / Pacific Islander 0.6%
Largest group: Asian at 45.5% of enrollment.
Student-body diversity index 67.0/100
Simpson diversity index - at 67.0, Ps 99 Isaac Asimov is more mixed than the New York school average of 45.5.
How Ps 99 Isaac Asimov Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Edward R Murrow High School | Larger | Lower economic need | Similar S:T ratio |
| Abraham Lincoln High School | Larger | Similar economic need | Higher S:T ratio |
| John Dewey High School | Larger | Similar economic need | Similar S:T ratio |
| Is 228 David a Boody | Larger | Similar economic need | Similar S:T ratio |
| Is 98 Bay Academy | Larger | Lower economic need | Higher S:T ratio |
Comparisons are relative to Ps 99 Isaac Asimov's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,210
- Students per teacher
- 17.7:1
- Resource Index
- 29/100
- Enrollment
- 2,209
- Students per teacher
- 14.1:1
- Resource Index
- 22/100
- Enrollment
- 1,555
- Students per teacher
- 14:1
- Resource Index
- 33/100
- Enrollment
- 1,435
- Students per teacher
- 19.1:1
- Resource Index
- 25/100
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 (~847 students)
Frequently asked questions about Ps 99 Isaac Asimov
How many students attend Ps 99 Isaac Asimov?
Ps 99 Isaac Asimov has 847 students enrolled. It is a public school in Brooklyn, NY. CCD year-over-year: 804 (2022-23) → 831 (2023-24), nearly flat (+27).
What is the student-teacher ratio at Ps 99 Isaac Asimov?
The student-teacher ratio at Ps 99 Isaac Asimov is 14.9:1, which is 26% higher than the New York average of 11.8:1 and 5% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Ps 99 Isaac Asimov?
80.6% of students at Ps 99 Isaac Asimov are eligible for free lunch, compared to the New York average of 56.2%.
What is the racial and ethnic makeup of Ps 99 Isaac Asimov?
The largest demographic group at Ps 99 Isaac Asimov is Asian at 45.5% of enrollment, in Brooklyn, NY. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 67.0/100.
What is the Resource Investment Index for Ps 99 Isaac Asimov?
Ps 99 Isaac Asimov has a Resource Investment Index of 20/100 (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 99 Isaac Asimov rank among schools in Brooklyn?
By Resource Investment Index, Ps 99 Isaac Asimov ranks #224 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 #21?
Besides Ps 99 Isaac Asimov, New York City Geographic District #21 also operates Edward R Murrow High School (3,503 students), Abraham Lincoln High School (2,210 students), and John Dewey High School (2,209 students). See the New York City Geographic District #21 district page for the complete list.