Enrollment
652
New York · 2024-25 NCES data
Elementary school (grades K-5) · Larchmont, NY
Chatsworth Avenue School
Federal NCES profile for Chatsworth Avenue School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 51/100.
2024-25 NCES dataElementary school (grades K-5)NCES 361824001645
👥 S:T ratio 43
🌟 Gifted program 30
📋 Attendance 80
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Chatsworth Avenue School earns 51/100 on the Resource Investment Index, with class sizes larger than 82% of New York schools.
- #2 of 4
- public schools in Larchmont · Resource Index
- 51
- Resource Index · Higher
- 14.2:1
- large classes for New York
- 4.4%
- free-lunch eligible
Chatsworth Avenue School has class sizes larger than 82% of New York schools. Computed live against every New York school reporting to NCES.
By Resource Investment Index, Chatsworth Avenue School ranks #2 of 4 public schools in Larchmont, NY.
School address
District: Mamaroneck Union Free School District · New York
NCES ID 361824001645 Verify on NCES CCD record →
Teachers (FTE)
46.0
Federal CCD staff survey
Students per teacher
14.2:1
vs 11.8:1 New York avg
+20% vs state
Free-lunch eligible
4.4%
vs 56.2% New York avg
-92% vs state
Student-teacher ratio in context
How Chatsworth Avenue School compares with New York and U.S. medians
What stands out at Chatsworth Avenue School
Chatsworth Avenue School is a lower-poverty, mid-sized elementary school in Larchmont, New York, enrolling 652 students.
Class loads run somewhat heavier than typical: 14.2:1 puts it in the larger third of New York schools by student-teacher ratio.
Comparatively few students face economic hardship here, 4.4% free-meal eligibility runs 92% below the New York average.
Enrollment of 652 puts it in the larger third of New York schools by headcount.
Its Resource Investment Index lands in the upper third of 4,801 scored New York schools.
Against 291 statewide peers matched on enrollment and economic need, it ranks mid-pack at #120.
Its student body is led by White (77%) and Hispanic or Latino (10%) (diversity index 39/100).
Attendance holds up well here: only 8.1% of students were chronically absent, below the typical post-pandemic national figure.
Mamaroneck Union Free School District also operates Mamaroneck High School (1,764 students) and Hommocks School (1,284 students) alongside Chatsworth Avenue School.
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 Chatsworth Avenue School compares
Chatsworth Avenue School 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 | 14.2:1 | ▲ 20% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 4.4% | ▼ 92% | 56.2% | 51.7% |
| Enrollment | 652 | top 22% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14.2:1
Leaner classes than 55% of US schools, a middle-of-the-pack class size.
652
Bigger than 77% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
4.4%
free-lunch eligible
- 92% below the New York average of 56.2%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
14.2:1
students per teacher
- 20% above state mean
Top 82% in New York - lower ratio than 18% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
8.1%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$25,761
per pupil, district-wide
- below New York avg of $26,410
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 per 100 students. Reported via the Civil Rights Data Collection.
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
White 76.7%
Hispanic or Latino 9.8%
Two or More 8.8%
Asian 3.5%
African American 1.1%
Native Hawaiian / Pacific Islander 0.2%
Largest group: White at 76.7% of enrollment.
Student-body diversity index 39.3/100
Simpson diversity index - at 39.3, Chatsworth Avenue School is less mixed than the New York school average of 45.5.
Programs
Funding & spending
District-wide per-pupil expenditure for Mamaroneck Union Free School District, which includes Chatsworth Avenue School.
$25,761
Per student
-2%
vs New York
Avg $26,410
+55%
vs U.S.
Avg $16,593
Revenue mix
Local 87.6%
State 8.1%
Federal 4.3%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Chatsworth Avenue School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Mamaroneck High School | Larger | Higher economic need | Similar S:T ratio |
| Hommocks School | Larger | Higher economic need | Lower S:T ratio |
| Murray Avenue School | Similar size | Similar economic need | Similar S:T ratio |
| Mamaroneck Avenue School | Similar size | Higher economic need | Lower S:T ratio |
| Central School | Similar size | Similar economic need | Similar S:T ratio |
Comparisons are relative to Chatsworth Avenue School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,764
- Students per teacher
- 13.8:1
- Resource Index
- 47/100
- Enrollment
- 1,284
- Students per teacher
- 11.2:1
- Resource Index
- 54/100
- Enrollment
- 689
- Students per teacher
- 15.3:1
- Resource Index
- 50/100
- Enrollment
- 611
- Students per teacher
- 9.3:1
- Resource Index
- 43/100
- Enrollment
- 520
- Students per teacher
- 13.3:1
- Resource Index
- 50/100
Similar elementary 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 (~652 students)
Next steps
Verify locally before acting on Chatsworth Avenue School's federal record.
- Compare Chatsworth Avenue School against another school. Compare schools
- Mamaroneck Union Free School District'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 Chatsworth Avenue School
How many students attend Chatsworth Avenue School?
Chatsworth Avenue School has 652 students enrolled. It is an elementary school in Larchmont, NY.
What is the student-teacher ratio at Chatsworth Avenue School?
The student-teacher ratio at Chatsworth Avenue School is 14.2:1, which is 20% higher than the New York average of 11.8:1 and 10% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Chatsworth Avenue School?
4.4% of students at Chatsworth Avenue School are eligible for free lunch, compared to the New York average of 56.2%.
What is the racial and ethnic makeup of Chatsworth Avenue School?
The largest demographic group at Chatsworth Avenue School is White at 76.7% of enrollment, in Larchmont, NY.
What is the Resource Investment Index for Chatsworth Avenue School?
Chatsworth Avenue School has a Resource Investment Index of 51/100 (higher 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 Chatsworth Avenue School rank among public schools in Larchmont?
By Resource Investment Index, Chatsworth Avenue School ranks #2 of 4 public schools in Larchmont, NY. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Larchmont on the city page.
Is Chatsworth Avenue School a good school?
Chatsworth Avenue School earns 51/100 on the Resource Investment Index, with class sizes larger than 82% of 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 Mamaroneck Union Free School District?
Besides Chatsworth Avenue School, Mamaroneck Union Free School District also operates Mamaroneck High School (1,764 students), Hommocks School (1,284 students), and Murray Avenue School (689 students). See the Mamaroneck Union Free School District 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.