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Public School Review - Established 2003

Best Clayton Public Schools (2026)

For the 2026 school year, there are 4 public schools serving 799 students in Clayton, NY.
The top-ranked public schools in Clayton, NY are Thousand Islands High School, Thousand Islands Middle School and Bashaw Elementary School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Clayton, NY public schools have an average math proficiency score of 67% (versus the New York public school average of 53%), and reading proficiency score of 52% (versus the 49% statewide average). Schools in Clayton have an average ranking of 8/10, which is in the top 30% of New York public schools.
Minority enrollment is 7% of the student body (majority Hispanic), which is less than the New York public school average of 61% (majority Hispanic).

Best Public Schools in Clayton, NY (2026)

School
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Thousand Islands High School
(Math: ≥80% | Reading: ≥80%)
Rank:
10/
10
Top 10%
8481 County Rt 9
Clayton, NY 13624
(315) 686-5594
Gr: 9-12 | 262 students Student-teacher ratio: 12:1 Minority enrollment: 10%
Rank: #22.
Thousand Islands Middle School
(Math: 75-79% | Reading: 64%)
Rank:
9/
10
Top 20%
8487 County Rt 9
Clayton, NY 13624
(315) 686-5594
Gr: 6-8 | 185 students Student-teacher ratio: 12:1 Minority enrollment: 6%
Rank: #33.
Bashaw Elementary School
(Math: 50-59% | Reading: 40-49%)
Rank:
5/
10
Bottom 50%
410 S Esselstyne
Clayton, NY 13624
(315) 654-2142
Gr: PK-5 | 109 students Student-teacher ratio: 12:1 Minority enrollment: 7%
Rank: #44.
Guardino Elementary School
(Math: 50-54% | Reading: 30-34%)
Rank:
4/
10
Bottom 50%
600 High St
Clayton, NY 13624
(315) 686-5594
Gr: PK-5 | 243 students Student-teacher ratio: 11:1 Minority enrollment: 4%

Frequently Asked Questions

What are the top-ranked public schools in Clayton, NY?
The top-ranked public schools in Clayton, NY include Thousand Islands High School, Thousand Islands Middle School and Bashaw Elementary School.
How many public schools are located in Clayton?
4 public schools are located in Clayton.
What is the racial composition of students in Clayton?
Clayton public schools minority enrollment is 7% of the student body (majority Hispanic), which is less than the New York public schools average of 61% (majority Hispanic).
Which public schools in Clayton are often viewed compared to one another?

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