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 2,400 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 10%, and reading proficiency is top 10%).
The percentage of students achieving proficiency in math is 86% (which is higher than the New York state average of 52%). 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 11:1 is equal to the New York state level of 11:1.
Minority enrollment is 58% of the student body (majority Asian), which is lower than the New York state average of 61% (majority Hispanic and Black).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 2,400 students
- Student-Teacher Ratio: 11:1
- Minority Enrollment: 58%
- Graduation Rate: ≥99% (Top 1% in NY)
- Overall Testing Rank: Top 5%
- Math Proficiency: 86% (Top 10%)
- 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 2,400 students has grown by 8% over five school years.
The teacher population of 228 teachers has grown by 10% over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
2,400 students
Total Classroom Teachers
228 teachers
Year Founded
1956
Colors
White, Black, Red
School Calendar
School Rankings
Syosset Senior High School ranks within the top 5% of all 4,346 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 0.73. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#143 out of 4346 schools
(Top 5%)
(Top 5%)
Math Test Scores (% Proficient)
86%
52%
Reading/Language Arts Test Scores (% Proficient)
88%
49%
Science Test Scores (% Proficient)
≥99%
78%
Student-Teacher Ratio
11:1
11:1
American Indian
n/a
1%
Asian
50%
10%
Hispanic
5%
31%
Black
1%
15%
White
42%
39%
Hawaiian
n/a
n/a
Two or more races
2%
4%
All Ethnic Groups
Graduation Rate
≥99%
87%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
16%
55%
Eligible for Reduced Lunch
1%
2%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), NY Dept. of Education
Frequently Asked Questions
What is Syosset Senior High School's ranking?
Syosset Senior High School is ranked #143 out of 4,346 schools, which ranks it among the top 5% of public schools in New York.
What schools are Syosset Senior High School often compared to?
Syosset Senior High Schoolis often viewed alongside schools like Jericho Senior High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
86% of students have achieved math proficiency (compared to the 52% NY state average), while 88% of students have achieved reading proficiency (compared to the 49% NY state average).
What is the graduation rate of Syosset Senior High School?
The graduation rate of Syosset Senior High School is 99%, which is higher than the New York state average of 87%.
How many students attend Syosset Senior High School?
2,400 students attend Syosset Senior High School.
What is the racial composition of the student body?
50% of Syosset Senior High School students are Asian, 42% of students are White, 5% of students are Hispanic, 2% of students are Two or more races, and 1% of students are Black.
What is the student-teacher ratio of Syosset Senior High School?
Syosset Senior High School has a student ration of 11:1, which is equal to the New York state average of 11:1.
What grades does Syosset Senior High School offer ?
Syosset Senior High School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Syosset Senior High School part of?
Syosset Senior High School is part of Syosset Central School District.
School Reviews
5 10/10/2025
great school, allows students to thrive academically and mentally, athletics are great, would highly recommend this distric
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