Guardino Elementary School
Clayton, NY
Grades PreK to 5 · 243 students
Public school
Thousand Islands High School
Clayton, New York · Grades 9 to 12 · Thousand Islands Central School District
Public school
About Thousand Islands High School
Located in Clayton, New York, Thousand Islands High School is a public school for grades 9 through 12. Federal data for 2024-25 shows 262 students enrolled. With about 20.7 full-time-equivalent teachers, that works out to roughly 12.7 students per teacher. Thousand Islands Central School District runs 4 schools listed here, including this one. See them all. The surrounding area is classified as a rural area 5 to 25 miles from an urban area, in Jefferson County. Within 5 miles there is 1 other school.
Open Houses & Tours
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School facts
| Address | 8481 County Rt 9, Clayton, NY 13624 |
|---|---|
| Phone | (315) 686-5594 |
| School district | Thousand Islands Central School District |
| Grades | 9 to 12 |
| Students (2024-25) | 262 |
| Teachers (full-time equivalent, 2024-25) | 20.7 |
| Students per teacher | 12.7 |
| Charter school | No |
| School type | Regular |
| Level | High |
| Locale (NCES) | Rural, distant, Jefferson County |
Source: NCES Common Core of Data (CCD), 2024-25 public school directory and membership files (NCES school ID 360765000548). Details may have changed since the survey. Schools can update them by claiming this profile.
Nearby schools
Thousand Islands Middle SchoolPublic · Grades 6 to 8Clayton · under 0.1 miGuardino Elementary SchoolPublic · Grades PreK to 5Clayton · 6.6 miBashaw Elementary SchoolPublic · Grades PreK to 5Cape Vincent, NY · 8 miLyme Central SchoolPublic · Grades PreK to 12Chaumont, NY · 9.4 miGenesis School - Christian Life CenterPrivate, Christian (nondenominational) · Grades 4 to 7Chaumont, NY · 10.1 miLa Fargeville Central SchoolPublic · Grades PreK to 12La Fargeville, NY · 11.6 miDexter Elementary SchoolPublic · Grades PreK to 2Dexter, NY · 14.9 miGeneral Brown Junior-Senior High SchoolPublic · Grades 7 to 12Dexter, NY · 15.2 mi
The 8 closest public, charter and private schools by straight-line distance, from NCES location data. Listings here are never paid.
Frequently asked questions
What grades does Thousand Islands High School serve?
Thousand Islands High School serves grades 9 through 12.
How many students attend Thousand Islands High School?
Thousand Islands High School reported 262 students in 2024-25, according to the NCES Common Core of Data.
What is the student-teacher ratio at Thousand Islands High School?
About 12.7 students per full-time-equivalent teacher, based on 262 students and 20.7 teachers in federal data.
Is Thousand Islands High School a public or charter school?
Thousand Islands High School is a traditional public (non-charter) school.
What school district is Thousand Islands High School in?
Thousand Islands High School is part of Thousand Islands Central School District. See all schools in this district at https://parentschoolreview.com/districts/ny/thousand-islands-central-school-district/
Where is Thousand Islands High School located?
Thousand Islands High School is at 8481 County Rt 9, Clayton, NY 13624. The phone number is (315) 686-5594.
How many other schools are near Thousand Islands High School?
There is 1 other school within 5 miles of Thousand Islands High School in our directory.
Is this your school?
Claim this profile for free to correct details, post open houses and tours, and respond to reviews.
ParentSchoolReview is owned and operated by School Success. Disclosure.
Other public and charter schools in Clayton
Thousand Islands Middle School
Clayton, NY
Grades 6 to 8 · 185 students
Public school
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