Thousand Islands High School
Clayton, NY · Thousand Islands Central School District
Regular public school · Grades 9-12 · Rural, distant
160th of 1,137 New York high schools statewide · better than 86%· Stable
8481 COUNTY RT 9, Clayton, NY 13624
(315)686-5594NCES ID 360765000548Directory 2023–24
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.
Percent meeting or exceeding the state standard, NYSED 3-8 assessments 2024–25; high schools: Regents 65+ rate
Racial and ethnic breakdown of 253 students (2023–24, NCES) — history since 1988, with comparable seven-category changes from 2010
| Group | Trend | 2010 | 2023 | Change |
|---|---|---|---|---|
| White | 93.1% | 90.9% | ▼ 2.2 pts | |
| Two or more races | 0.6% | 4.3% | ▲ 3.7 pts | |
| Hispanic | 2.6% | 4.0% | ▲ 1.4 pts | |
| Asian | 1.4% | 0.4% | ▼ 1.0 pts | |
| Black | 2.0% | 0.0% | ▼ 2.0 pts |
NCES history for this school begins in 1988. Race categories changed by 2010: earlier data combines Asian and Pacific Islander students and does not consistently identify multiracial students. The chart retains that history, while the change table uses 2010 onward.
Typical home value $327K in zip 13624 as of 2026-05 · trend since 2000
Data Provided by Zillow Group
Closest same-level schools, with 2024–25 state rank · ▲▼ = points better or worse than Thousand Islands High School
- #608General Brown Junior-Senior High SchoolGeneral Brown Central School District · 15.2 mi away608th of 1,137
ELA 48% ▼31 · Math 65% ▼20Compare - #450Alexandria Central High SchoolAlexandria Central School District · 17.4 mi away450th of 1,137
ELA 58% ▼21 · Math 73% ▼12Compare - #467Watertown Senior High SchoolWatertown City School District · 21.6 mi away467th of 1,137
ELA 82% ▲3 · Math 46% ▼39Compare - #220South Jefferson High SchoolSouth Jefferson Central School District · 26.8 mi away220th of 1,137
ELA 89% ▲10 · Math 68% ▼17Compare
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.