New YorkSchoolsTHOUSAND ISLANDS HIGH SCHOOL

THOUSAND ISLANDS HIGH SCHOOL

PublicRegularGrades 912
CLAYTON, New York · THOUSAND ISLANDS CENTRAL SCHOOL DISTRICT
SCHOOL SNAPSHOT
Students262
Student:Teacher13.1:1
Free/Reduced Lunch38%
Title INo
State accountability — NY ESSA · 2025
NY ESSA 2025: Local Support and Improvement
HS Attendance3
HS CCCR3
HS Weight Performance4
HS ELPs
HS Core Performance4
Math Proficient
2025
N/A
US avg ~36%
English / ELA Proficient
2025
N/A
US avg ~46%
Math Advanced
2025
N/A
ELA Advanced
2025
N/A
Science Proficient
2025
N/A
Students Tested (Math)
2025
N/A
State Rating
2025
N/A
Local Support and Improvement
Years of Test Data
2
2024–2025
Math proficiency trend ↓

Math proficiency over time

35.0%35.5%36.0%36.5%37.0%20242025THOUSAND ISLANDS HIGH SCHOOLUS avg 36%

Proficiency rates averaged across tested grades. Ratings sourced from state DOE accountability systems (CA Dashboard, TX TEA A-F, FL School Grades, NY ESSA, IL Report Card, WA OSPI).

Advanced courses

Course enrolments reported to the US Department of Education Civil Rights Data Collection.

Geometry
80
Algebra II
35
Advanced Math
23
Calculus
23
Biology
93
Chemistry
23
Physics
23