- Enrollment
- 2,953
- Students per teacher
- 20.9:1
- Resource Index
- 40/100
Elementary school (grades K-5) · Bronx, NY
Ps 81 Robert J Christen
Federal NCES profile for Ps 81 Robert J Christen, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 34/100.
2024-25 NCES dataElementary school (grades K-5)NCES 360008702318
👥 S:T ratio 39
📋 Attendance 29
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Ps 81 Robert J Christen earns 34/100 on the Resource Investment Index, with class sizes larger than 88% of New York schools.
- #27 of 86
- elementary schools in Bronx · Resource Index
- 34
- Resource Index · Typical
- 15.2:1
- large classes for New York
- 42.1%
- free-lunch eligible
Ps 81 Robert J Christen has class sizes larger than 88% of New York schools. Computed live against every New York school reporting to NCES.
By Resource Investment Index, Ps 81 Robert J Christen ranks #27 of 86 elementary schools in Bronx, NY.
School address
District: New York City Geographic District #10 · New York
NCES ID 360008702318 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+27 students YoY
Ps 81 Robert J Christen held near 699 students from 2022-23 to 2023-24 (+27 headcount).
Teacher FTE added 47.1 → 50.9 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+27 students YoY 360008702318 · Bronx, NY Elementary · MID · TRAD
715 enr · 15.2:1 · 42.1% lunch · RII 34
Nearest enrollment peer: Bronx High School of Science (the) (2,953 students)
Ps 81 Robert J Christen held near 699 students from 2022-23 to 2023-24 (+27 headcount). Teacher FTE added 47.1 → 50.9 across the same CCD years. Read with this school → · District book → · New York schools → · Find another →
Ps 81 Robert J Christen in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Bronx High Sch
Bronx High School of Science (the)
2,953 students
- Riverdale/King
Riverdale/Kingsbridge Academy (Ms/Hs 141)
1,383 students
- Dewitt Clinton
Dewitt Clinton High School
1,212 students
- Ps 86 Kingsbri 1,091
Ps 86 Kingsbridge Heights
1,091 students
- In-Tech Academ 953
In-Tech Academy (Ms/Hs 368)
953 students
- This school 715
Ps 81 Robert J Christen
715 students
What this shows Ps 81 Robert J Christen reports 715 students on the CCD universe file.
How Ps 81 Robert J Christen compares
Ps 81 Robert J Christen 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 | 15.2:1 | ▲ 29% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 42.1% | ▼ 25% | 56.2% | 51.7% |
| Enrollment | 715 | top 18% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.2:1
Leaner classes than 45% of US schools, a middle-of-the-pack class size.
715
Bigger than 81% of US schools by enrollment, a large campus nationally.
Equity indicators methodology
Economic need
42.1%
free-lunch eligible
- 25% below 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
15.2:1
students per teacher
- 29% above state mean
Top 88% in New York - lower ratio than 12% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
28.5%
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
Hispanic or Latino 47.7%
White 33.3%
African American 7.4%
Asian 5.5%
Two or More 5.5%
American Indian / Alaska Native 0.4%
Native Hawaiian / Pacific Islander 0.3%
Largest group: Hispanic or Latino at 47.7% of enrollment.
Student-body diversity index 65.0/100
Simpson diversity index - at 65.0, Ps 81 Robert J Christen is more mixed than the New York school average of 45.5.
How Ps 81 Robert J Christen Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Bronx High School of Science (the) | Larger | Similar economic need | Higher S:T ratio |
| Riverdale/Kingsbridge Academy (Ms/Hs 141) | Larger | Higher economic need | Similar S:T ratio |
| Dewitt Clinton High School | Larger | Higher economic need | Similar S:T ratio |
| Ps 86 Kingsbridge Heights | Larger | Higher economic need | Lower S:T ratio |
| In-Tech Academy (Ms/Hs 368) | Larger | Higher economic need | Lower S:T ratio |
Comparisons are relative to Ps 81 Robert J Christen's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,383
- Students per teacher
- 15.2:1
- Resource Index
- 39/100
- Enrollment
- 1,212
- Students per teacher
- 15.2:1
- Resource Index
- 20/100
- Enrollment
- 1,091
- Students per teacher
- 10.6:1
- Resource Index
- 29/100
- Enrollment
- 953
- Students per teacher
- 13.4:1
- Resource Index
- 23/100
Nationwide elementary 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 (~715 students)
Similar student-teacher ratio (~15.2:1)
Frequently asked questions about Ps 81 Robert J Christen
How many students attend Ps 81 Robert J Christen?
Ps 81 Robert J Christen has 715 students enrolled. It is an elementary school in Bronx, NY. CCD year-over-year: 672 (2022-23) → 699 (2023-24), nearly flat (+27).
What is the student-teacher ratio at Ps 81 Robert J Christen?
The student-teacher ratio at Ps 81 Robert J Christen is 15.2:1, which is 29% higher than the New York average of 11.8:1 and 3% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Ps 81 Robert J Christen?
42.1% of students at Ps 81 Robert J Christen are eligible for free lunch, compared to the New York average of 56.2%.
What is the racial and ethnic makeup of Ps 81 Robert J Christen?
The largest demographic group at Ps 81 Robert J Christen is Hispanic or Latino at 47.7% of enrollment, in Bronx, NY. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 65.0/100.
What is the Resource Investment Index for Ps 81 Robert J Christen?
Ps 81 Robert J Christen has a Resource Investment Index of 34/100 (typical 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 81 Robert J Christen rank among elementary schools in Bronx?
By Resource Investment Index, Ps 81 Robert J Christen ranks #27 of 86 elementary 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 elementary schools in Bronx on the city page.
What other schools are in New York City Geographic District #10?
Besides Ps 81 Robert J Christen, New York City Geographic District #10 also operates Bronx High School of Science (the) (2,953 students), Riverdale/Kingsbridge Academy (Ms/Hs 141) (1,383 students), and Dewitt Clinton High School (1,212 students). See the New York City Geographic District #10 district page for the complete list.