Top Rankings
Thousand Islands Central School District ranks among the top 20% of public school district in New York for:
Category
Attribute
Graduation Rate
Highest graduation rate (Top 20%)
For the 2026 school year, there are 4 public schools serving 799 students in Thousand Islands Central School District. This district's average testing ranking is 8/10, which is in the top 30% of public schools in New York.
Public Schools in Thousand Islands Central School District 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).
Minority enrollment is 7% of the student body (majority Hispanic), which is less than the New York public school average of 61% (majority Hispanic).
Overview
This School District
This State (NY)
# Schools
4 Schools
4,810 Schools
# Students
799 Students
2,503,634 Students
# Teachers
69 Teachers
218,347 Teachers
Student-Teacher Ratio
12:1
12:1
Student By Grade
District Rank
Thousand Islands Central School District, which is ranked #295 of all 1,008 school districts in New York (based off of combined math and reading proficiency testing data) for the 2022-2023 school year.
The school district's graduation rate of 92% has increased from 90-94% over five school years.
Overall District Rank
#257 out of 1017 school districts
(Top 30%)
(Top 30%)
Math Test Scores (% Proficient)
66%
52%
Reading/Language Arts Test Scores (% Proficient)
54%
49%
Science Test Scores (% Proficient)
80-84%
78%
Graduation Rate
92%
87%
Students by Ethnicity:
Diversity Score
0.13
0.73
% American Indian
n/a
1%
% Asian
1%
10%
% Hispanic
3%
31%
% Black
n/a
15%
% White
93%
39%
% Hawaiian
n/a
n/a
% Two or more races
3%
4%
All Ethnic Groups
District Revenue and Spending
The revenue/student of $28,752 in this school district is less than the state median of $31,371. The school district revenue/student has grown by 7% over four school years.
The school district's spending/student of $25,499 is less than the state median of $32,248. The school district spending/student has stayed relatively flat over four school years.
Total Revenue
$23 MM
$78,541 MM
Spending
$20 MM
$80,737 MM
Revenue / Student
$28,752
$31,371
Spending / Student
$25,499
$32,248
Best Thousand Islands Central School District Public Schools (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Thousand Islands High School
(Math: ≥80% | Reading: ≥80%)
Rank:
Rank:
10/
Top 10%10
8481 County Rt 9
Clayton, NY 13624
(315) 686-5594
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:
Rank:
9/
Top 20%10
8487 County Rt 9
Clayton, NY 13624
(315) 686-5594
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:
Rank:
5/
Bottom 50%10
410 S Esselstyne
Clayton, NY 13624
(315) 654-2142
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:
Rank:
4/
Bottom 50%10
600 High St
Clayton, NY 13624
(315) 686-5594
Clayton, NY 13624
(315) 686-5594
Gr: PK-5 | 243 students Student-teacher ratio: 11:1 Minority enrollment: 4%
Frequently Asked Questions
How many schools belong to Thousand Islands Central School District?
Thousand Islands Central School District manages 4 public schools serving 799 students.
What is the rank of Thousand Islands Central School District?
Thousand Islands Central School District is ranked #295 out of 1,008 school districts in New York (top 30%) based off of combined math and reading proficiency testing data for the 2022-2023 school year. This district ranks in the top 20% of New York school districts for: Highest graduation rate (Top 20%)
What is the racial composition of students in Thousand Islands Central School District?
93% of Thousand Islands Central School District students are White, 3% of students are Hispanic, 3% of students are Two or more races, and 1% of students are Asian.
What is the student/teacher ratio of Thousand Islands Central School District?
Thousand Islands Central School District has a student/teacher ratio of 12:1, which is higher than the New York state average of 11:1.
What is Thousand Islands Central School District's spending/student ratio?
The school district's spending/student of $25,499 is less than the state median of $32,248. The school district spending/student has stayed relatively flat over four school years.
Recent Articles
How Public Schools Train Staff Each Year
Learn how public schools train staff each year through professional development, safety training, technology instruction, and ongoing educational support.
What Substitute Teachers Experience in Public Schools
Discover what substitute teachers experience in public schools, including daily responsibilities, challenges, rewards, and their role in student success.
How Teachers Collaborate Across Departments in Public Schools
Learn how teachers collaborate across departments to improve student outcomes, strengthen instruction, and prepare students for real-world success.
