Chatsworth Avenue School
Larchmont, NY · Elementary School
Chatsworth Avenue School is a elementary school in Larchmont, NY with 633 students enrolled and a 65% proficiency rate. Part of Mamaroneck Union Free School District. NCES data from the U.S. Department of Education.
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About This School
Chatsworth Avenue School is a elementary school located in Larchmont, New York. The school serves 633 students. The student-to-teacher ratio is 13.8:1.
According to EDFacts assessment data, 65% of students meet grade-level proficiency standards in combined math and reading.
5% of students qualify for free or reduced-price lunch.
Chatsworth Avenue School is part of the Mamaroneck Union Free School District in New York.
How This School Compares
Chatsworth Avenue School has 633 students enrolled, making it smaller than the average school in Mamaroneck Union Free School District (909 students). Its 65% proficiency rate is 3 percentage points above the district average of 62%. Compared to the New York state average of 47%, the school performs 19 points higher. With a 13.8:1 student-teacher ratio, it offers smaller class sizes than the national average.
Other Schools in Mamaroneck Union Free School District
Frequently Asked Questions
Chatsworth Avenue School has 633 students enrolled. The student-to-teacher ratio is 13.8:1.
According to EDFacts data, 65% of students at Chatsworth Avenue School meet grade-level proficiency standards in combined math and reading assessments.
Chatsworth Avenue School is part of the Mamaroneck Union Free School District in Larchmont, New York. You can view all schools in this district on the district page.
All data on this page comes from the National Center for Education Statistics (NCES) Common Core of Data and EDFacts assessment results. These are official federal datasets published by the U.S. Department of Education.
School profiles are built from NCES directory data and EDFacts assessment results. Proficiency rates reflect combined math and reading performance. Graduation rates are reported for high schools with available data.
For this entity, the underlying data on this page comes from NCES Common Core of Data and EDFacts. The breakdown above is the federal record; the paragraphs below add the per-entity context that makes the headline numbers usable for a real decision rather than just a data lookup.
The methodology behind every numeric value on this page is publicly documented on the NCES Common Core of Data and EDFacts portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for this entity’s peers within U.S. public schools and districts. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Source: NCES Common Core of Data, 2026.