Thousand Islands High School
Clayton, NY · Thousand Islands Central School District · Grades 9-12
160th of 1,137 New York high schools statewide · better than 86%· Stable
Thousand Islands High School ranking
SchoolRow ranks Thousand Islands High School 160th of 1,137 New York high schools for 2024–25, based on NYSED 3-8 assessments 2024–25; high schools: Regents 65+ rate English and Math results — better than 86% of high schools statewide. Its statewide percentile went from 84th in 2022 to 86th in 2025.
Thousand Islands High School test scores
Percent meeting or exceeding the state standard, NYSED 3-8 assessments 2024–25; high schools: Regents 65+ rate
Thousand Islands High School students
Racial and ethnic breakdown of 253 students (2023–24, NCES) — and how it has shifted since 2013
| Group | Trend | 2013 | 2023 | Change |
|---|---|---|---|---|
| White | 93.8% | 90.9% | ▼ 2.9 pts | |
| Two or more races | 0.6% | 4.3% | ▲ 3.7 pts | |
| Hispanic | 3.0% | 4.0% | ▲ 1.0 pts | |
| Asian | 0.9% | 0.4% | ▼ 0.5 pts | |
| Black | 1.2% | 0.0% | ▼ 1.2 pts |
Homes near Thousand Islands High School
Typical home value $327K in zip 13624 as of 2026-05 · trend since 2000
Data Provided by Zillow Group
High schools near Thousand Islands High School
Closest same-level schools, with 2024–25 state rank
- 5General Brown Junior-Senior High SchoolGeneral Brown Central School District · 15.2 mi away608th of 1,137
ELA 48% · Math 65% - 7Alexandria Central High SchoolAlexandria Central School District · 17.4 mi away450th of 1,137
ELA 58% · Math 73% - 6Watertown Senior High SchoolWatertown City School District · 21.6 mi away467th of 1,137
ELA 82% · Math 46% - 9South Jefferson High SchoolSouth Jefferson Central School District · 26.8 mi away220th of 1,137
ELA 89% · Math 68%
Frequently asked questions
What school district is Thousand Islands High School in?
Thousand Islands High School is part of the Thousand Islands Central School District district in Clayton, New York.
Is Thousand Islands High School a good school?
SchoolRow ranks Thousand Islands High School 160th of 1,137 New York high schools (better than 86% statewide) based on 2024–25 test results (NYSED 3-8 assessments 2024–25; high schools: Regents 65+ rate).
What is the racial makeup of Thousand Islands High School?
White 91%, Two or more races 4%, Hispanic 4% (253 students, 2023–24).
How much do homes near Thousand Islands High School cost?
The typical home value in zip code 13624 is $327K as of 2026-05 (Zillow ZHVI).
Sources: state education department data (NYSED 3-8 assessments 2024–25; high schools: Regents 65+ rate, low-income, chronic absenteeism), National Center for Education Statistics via the Urban Institute (enrollment, demographics, staffing), Zillow Group (home values). Rankings are computed by SchoolRow from state English and Math results within grade level; they measure test performance, not everything that makes a school good.