allk12 · Rankings · Highest proficiency · New York · Jefferson County · High schools

The highest-performing public high schools by test proficiency in Jefferson County, New York

7 public high schools in Jefferson County, New York appear in this ranking of the highest-performing public high schools by test proficiency, ranked by composite state-assessment proficiency. THOUSAND ISLANDS HIGH SCHOOL leads the list at 86.7%, against a median of 65.3% across the ranked schools.

The table below is sortable and filterable, and the full list downloads as a CSV. Figures come from federal NCES enrollment data and, where applicable, state assessment results for 2024-25.

Schools ranked

Jefferson County, New York

Top % Proficient

86.7%

Median % Proficient

65.3%

HIGHEST PROFICIENCY · JEFFERSON COUNTY, NEW YORK

#	School	City	District	Level	% FRL	Students	% Proficient
1	THOUSAND ISLANDS HIGH SCHOOL	CLAYTON, NY	THOUSAND ISLANDS CENTRAL SCHOOL DISTRICT	High	37.8%	262	86.7%
2	SOUTH JEFFERSON HIGH SCHOOL	ADAMS, NY	SOUTH JEFFERSON CENTRAL SCHOOL DISTRICT	High	38.3%	574	82.7%
3	INDIAN RIVER HIGH SCHOOL	PHILADELPHIA, NY	INDIAN RIVER CENTRAL SCHOOL DISTRICT	High	46.5%	791	78.2%
4	CARTHAGE SENIOR HIGH SCHOOL	CARTHAGE, NY	CARTHAGE CENTRAL SCHOOL DISTRICT	High	43.5%	887	65.3%
5	ALEXANDRIA CENTRAL HIGH SCHOOL	ALEXANDRIA BAY, NY	ALEXANDRIA CENTRAL SCHOOL DISTRICT	High	42.0%	224	64.8%
6	GENERAL BROWN JUNIOR-SENIOR HIGH SCHOOL	DEXTER, NY	GENERAL BROWN CENTRAL SCHOOL DISTRICT	High	41.3%	675	61.4%
7	WATERTOWN SENIOR HIGH SCHOOL	WATERTOWN, NY	WATERTOWN CITY SCHOOL DISTRICT	High	62.0%	1,181	59.3%

Page 1 of 1 · top 7 of 7 ranked. NCES + state assessment data, 2024-25.↓ Download full CSV

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DATA NOTICE

allk12 is independent and not affiliated with, endorsed by, or sponsored by NCES, the US Census Bureau, any state education agency or assessment program, or any other government agency. Source data is compiled from public records and provided "as is," without warranty of accuracy or completeness. You rely on it, and any analysis derived from it, at your own risk. See the full disclaimer.