Enrollment
847
New York · 2024-25 NCES data
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 23/100.
2024-25 NCES dataOther / mixed grade configurationNCES 360015202377
👥 S:T ratio 40
🌟 Gifted program 30
📋 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 23/100 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
- 23
- 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 →
Teachers (FTE)
57.0
Federal CCD staff survey
Students per teacher
14.9:1
vs 11.8:1 New York avg
+26% vs state
Free-lunch eligible
80.6%
vs 56.2% New York avg
+43% vs state
Student-teacher ratio in context
How Ps 99 Isaac Asimov compares with New York and U.S. medians
What stands out at Ps 99 Isaac Asimov
Ps 99 Isaac Asimov is a high-poverty, large combined-grade school in Brooklyn, New York, enrolling 847 students.
Class loads run heavy: 14.9:1 is larger than about 86% of New York schools and 26% above the 11.8:1 state mean, so each teacher carries more students than is typical.
Economic need runs somewhat above the state's typical profile, with 80.6% of students eligible for free meals.
Enrollment of 847 puts it in the larger third of New York schools by headcount.
Its Resource Investment Index trails 96% of the 4,801 New York schools with a score on record, one of the lower results on this measure.
Among 543 similarly sized, similarly resourced-need New York schools statewide, it ranks #435, in the lower tier once campus size and economic need are matched.
Its student body is led by Asian (46%) and White (29%), more mixed than most schools in the state (diversity index 67/100).
Chronic absenteeism is elevated: 45.2% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
New York City Geographic District #21 also operates Edward R Murrow High School (3,503 students) and Abraham Lincoln High School (2,210 students) alongside Ps 99 Isaac Asimov.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Ps 99 Isaac Asimov compares
Ps 99 Isaac Asimov on the metrics families compare, against 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 (what these measure)
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.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
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
- 3,503
- Students per teacher
- 15.1:1
- Resource Index
- 40/100
- 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
Similar other schools statewide
Matched by enrollment size and by staffing ratio across all of New York, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~847 students)
Similar student-teacher ratio (~14.9:1)
Next steps
Verify locally before acting on Ps 99 Isaac Asimov's federal record.
- Compare Ps 99 Isaac Asimov against another school. Compare schools
- New York City Geographic District #21's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
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.
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 23/100 (lower reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
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.
Is Ps 99 Isaac Asimov a good school?
Ps 99 Isaac Asimov earns 23/100 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. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
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.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.