Enrollment
601
New York · 2024-25 NCES data
Other / mixed grade configuration · Bronx, NY
Ps 121 Throop
Federal NCES profile for Ps 121 Throop, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 22/100.
2024-25 NCES dataOther / mixed grade configurationNCES 360008802450
👥 S:T ratio 35
🌟 Gifted program 30
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Ps 121 Throop earns 22/100 on the Resource Investment Index, with class sizes larger than 92% of New York schools. It is also more racially and ethnically mixed than most New York schools.
- #174 of 184
- schools in Bronx · Resource Index
- 22
- Resource Index · Lower
- 16.2:1
- large classes for New York
- 76.1%
- free-lunch eligible
Ps 121 Throop has class sizes larger than 92% of New York schools. Computed live against every New York school reporting to NCES.
By Resource Investment Index, Ps 121 Throop ranks #174 of 184 schools in Bronx, NY.
School address
District: New York City Geographic District #11 · New York
NCES ID 360008802450 Verify on NCES CCD record →
Teachers (FTE)
37.0
Federal CCD staff survey
Students per teacher
16.2:1
vs 11.8:1 New York avg
+37% vs state
Free-lunch eligible
76.1%
vs 56.2% New York avg
+35% vs state
Student-teacher ratio in context
How Ps 121 Throop compares with New York and U.S. medians
What stands out at Ps 121 Throop
Ps 121 Throop is a high-poverty, mid-sized combined-grade school in Bronx, New York, enrolling 601 students.
Class loads run heavy: 16.2:1 is larger than about 92% of New York schools and 37% 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 76.1% of students eligible for free meals.
Enrollment of 601 puts it in the larger third of New York schools by headcount.
Its Resource Investment Index trails 97% of the 4,801 New York schools with a score on record, one of the lower results on this measure.
Among 813 similarly sized, similarly resourced-need New York schools statewide, it ranks #730, in the lower tier once campus size and economic need are matched.
Its student body is led by African American (40%) and Hispanic or Latino (39%), more mixed than most schools in the state (diversity index 66/100).
Chronic absenteeism is elevated: 49.3% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
New York City Geographic District #11 also operates Harry S Truman High School (1,650 students) and Ps 83 Donald Hertz (1,451 students) alongside Ps 121 Throop.
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 121 Throop compares
Ps 121 Throop 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 | 16.2:1 | ▲ 37% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 76.1% | ▲ 35% | 56.2% | 51.7% |
| Enrollment | 601 | top 26% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.2:1
Leaner classes than 36% of US schools, a middle-of-the-pack class size.
601
Bigger than 73% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
76.1%
free-lunch eligible
- 35% 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
16.2:1
students per teacher
- 37% above state mean
Top 92% in New York - lower ratio than 8% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
49.3%
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
African American 40.3%
Hispanic or Latino 39.3%
Asian 13.0%
White 3.3%
Native Hawaiian / Pacific Islander 2.3%
American Indian / Alaska Native 1.0%
Two or More 0.8%
Largest group: African American at 40.3% of enrollment.
Student-body diversity index 66.4/100
Simpson diversity index - at 66.4, Ps 121 Throop is more mixed than the New York school average of 45.5.
How Ps 121 Throop Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Harry S Truman High School | Larger | Similar economic need | Lower S:T ratio |
| Ps 83 Donald Hertz | Larger | Similar economic need | Lower S:T ratio |
| Ps 89 | Larger | Similar economic need | Lower S:T ratio |
| Ps/Ms 194 | Larger | Similar economic need | Lower S:T ratio |
| Ps 96 Richard Rodgers | Larger | Similar economic need | Lower S:T ratio |
Comparisons are relative to Ps 121 Throop's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,650
- Students per teacher
- 11.5:1
- Resource Index
- 54/100
- Enrollment
- 1,451
- Students per teacher
- 13.3:1
- Resource Index
- 29/100
- Enrollment
- 1,169
- Students per teacher
- 12.6:1
- Resource Index
- 25/100
- Enrollment
- 1,169
- Students per teacher
- 12.2:1
- Resource Index
- 26/100
- Enrollment
- 880
- Students per teacher
- 13.8:1
- Resource Index
- 29/100
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 (~601 students)
Similar student-teacher ratio (~16.2:1)
Next steps
Verify locally before acting on Ps 121 Throop's federal record.
- Compare Ps 121 Throop against another school. Compare schools
- New York City Geographic District #11'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 121 Throop
How many students attend Ps 121 Throop?
Ps 121 Throop has 601 students enrolled. It is a public school in Bronx, NY.
What is the student-teacher ratio at Ps 121 Throop?
The student-teacher ratio at Ps 121 Throop is 16.2:1, which is 37% higher than the New York average of 11.8:1 and 3% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Ps 121 Throop?
76.1% of students at Ps 121 Throop are eligible for free lunch, compared to the New York average of 56.2%.
What is the racial and ethnic makeup of Ps 121 Throop?
The largest demographic group at Ps 121 Throop is African American at 40.3% of enrollment, in Bronx, NY. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 66.4/100.
What is the Resource Investment Index for Ps 121 Throop?
Ps 121 Throop has a Resource Investment Index of 22/100 (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 121 Throop rank among schools in Bronx?
By Resource Investment Index, Ps 121 Throop ranks #174 of 184 schools in Bronx, NY. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Bronx on the city page.
Is Ps 121 Throop a good school?
Ps 121 Throop earns 22/100 on the Resource Investment Index, with class sizes larger than 92% 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 #11?
Besides Ps 121 Throop, New York City Geographic District #11 also operates Harry S Truman High School (1,650 students), Ps 83 Donald Hertz (1,451 students), and Ps 89 (1,169 students). See the New York City Geographic District #11 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.