Syosset High School is a public high school located in Syosset, New York, United States, in Nassau County, on Long Island. It serves as the public high school for residents of the Syosset Central School District.
Serving 2,370 students in grades 9-12, Syosset Senior High School ranks in the top 5% of all schools in New York for overall test scores (math proficiency is top 5%, and reading proficiency is top 5%).
The percentage of students achieving proficiency in math is 98% (which is higher than the New York state average of 46%). The percentage of students achieving proficiency in reading/language arts is 88% (which is higher than the New York state average of 49%).
The student:teacher ratio of 10:1 is lower than the New York state level of 11:1.
Minority enrollment is 56% of the student body (majority Asian), which is lower than the New York state average of 60% (majority Hispanic and Black).
Quick Stats (2025)
- Grades: 9-12
- Enrollment: 2,370 students
- Student:Teacher Ratio: 10:1
- Minority Enrollment: 56%
- Graduation Rate: ≥99% (Top 1% in NY)
- Overall Testing Rank: Top 5%
- Math Proficiency: 98% (Top 5%)
- Reading Proficiency: 88% (Top 5%)
- Science Proficiency: ≥99% (Top 1%)
- Source: National Center for Education Statistics (NCES), NY Dept. of Education
Top Rankings
Syosset Senior High School ranks among the top 20% of public schools in New York for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
Science Proficiency
Graduation Rate
School Overview
Syosset Senior High School's student population of 2,370 students has grown by 11% over five school years.
The teacher population of 227 teachers has grown by 9% over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
2,370 students
Gender %
Total Classroom Teachers
227 teachers
Year Founded
1956
Colors
White, Black, Red
School Rankings
Syosset Senior High School ranks within the top 5% of all 4,377 schools in New York (based off of combined math and reading proficiency testing data).
The diversity score of Syosset Senior High School is 0.58, which is less than the diversity score at state average of 0.72. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#74 out of 4377 schools
(Top 5%)
(Top 5%)
Math Test Scores (% Proficient)
98%
46%
Reading/Language Arts Test Scores (% Proficient)
88%
49%