Syosset Senior High School
Syosset, NY · High School · Grades 9-12
Syosset Senior High School is a high school in Syosset, NY with 2,266 students enrolled and a 62% proficiency rate. Part of Syosset Central School District. NCES data from the U.S. Department of Education.
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About This School
Syosset Senior High School is a high school located in Syosset, New York. The school serves 2,266 students in grades 9-12. The student-to-teacher ratio is 10.1:1.
According to EDFacts assessment data, 62% of students meet grade-level proficiency standards in combined math and reading. The school reports a 88% graduation rate.
13% of students qualify for free or reduced-price lunch.
Syosset Senior High School is part of the Syosset Central School District in New York.
How This School Compares
Syosset Senior High School has 2,266 students enrolled, making it larger than the average school in Syosset Central School District (689 students). Its 62% proficiency rate is 1 percentage points below the district average of 63%. Compared to the New York state average of 47%, the school performs 15 points higher. With a 10.1:1 student-teacher ratio, it offers smaller class sizes than the national average.
Frequently Asked Questions
Syosset Senior High School has 2,266 students enrolled in grades 9-12. The student-to-teacher ratio is 10.1:1.
According to EDFacts data, 62% of students at Syosset Senior High School meet grade-level proficiency standards in combined math and reading assessments.
Syosset Senior High School has a 88% graduation rate, measuring the percentage of students who graduate within four years.
Syosset Senior High School is part of the Syosset Central School District in Syosset, 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.
The this entity record above pulls directly from NCES Common Core of Data and EDFacts. What follows is the per-entity context — how this entity sits in the broader U.S. K-12 school outcomes and enrollment distribution and which underlying factors drive the headline numbers.
Every number on this page links back to NCES Common Core of Data and EDFacts; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. public schools and districts with similar size, similar exposure, or similar geography — not the national-level summary alone.
Source: NCES Common Core of Data, 2026.