For the 2025 school year, there are 12 public middle schools serving 5,731 students in Jefferson County, NY.
The top ranked public middle schools in Jefferson County, NY are Thousand Islands Middle School, General Brown Junior-senior High School and Alexandria Central High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Jefferson County, NY public middle schools have an average math proficiency score of 51% (versus the New York public middle school average of 51%), and reading proficiency score of 46% (versus the 51% statewide average). Middle schools in Jefferson County have an average ranking of 7/10, which is in the top 50% of New York public middle schools.
Minority enrollment is 18% of the student body (majority Hispanic), which is less than the New York public middle school average of 63% (majority Hispanic).
Best ºÚÁÏÍø¹ÙÍø Middle Schools in Jefferson County (2025)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Grades
Students
Rank: #11.
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
Grades: 6-8
| 192 students
Rank: #22.
General Brown Junior-senior High School
(Math: 75-79% | Reading: 55%)
Rank:
Rank:
8/
Top 30%10
17643 Cemetery Rd
Dexter, NY 13634
(315) 779-2300
Dexter, NY 13634
(315) 779-2300
Grades: 7-12
| 654 students
Rank: #33.
Alexandria Central High School
(Math: 50-54% | Reading: 65-69%)
Rank:
Rank:
7/
Top 50%10
34 Bolton Ave
Alexandria Bay, NY 13607
(315) 482-5113
Alexandria Bay, NY 13607
(315) 482-5113
Grades: 7-12
| 224 students
Rank: #44.
La Fargeville Central School
(Math: 60% | Reading: 57%)
Rank:
Rank:
7/
Top 50%10
20414 Sunrise Ave
La Fargeville, NY 13656
(315) 658-2241
La Fargeville, NY 13656
(315) 658-2241
Grades: PK-12
| 465 students
Rank: #55.
Sackets Harbor Central School
(Math: 66% | Reading: 50-54%)
Rank:
Rank:
7/
Top 50%10
215 S Broad St
Sackets Harbor, NY 13685
(315) 646-3575
Sackets Harbor, NY 13685
(315) 646-3575
Grades: PK-12
| 399 students
Rank: #66.
Lyme Central School
(Math: 50-54% | Reading: 50-54%)
Rank:
Rank:
6/
Top 50%10
11868 Academy St
Chaumont, NY 13622
(315) 649-2417
Chaumont, NY 13622
(315) 649-2417
Grades: PK-12
| 345 students
Rank: #77.
Indian River Middle School
(Math: 50% | Reading: 47%)
Rank:
Rank:
5/
Bottom 50%10
32735 County Rt 29
Philadelphia, NY 13673
(315) 642-0125
Philadelphia, NY 13673
(315) 642-0125
Grades: 6-8
| 725 students
Rank: #88.
Belleville Henderson Central School
(Math: 43% | Reading: 44%)
Rank:
Rank:
5/
Bottom 50%10
8372 County Rt 75
Adams, NY 13605
(315) 846-5121
Adams, NY 13605
(315) 846-5121
Grades: PK-12
| 503 students
Rank: #99.
Carthage Middle School
(Math: 44% | Reading: 42%)
Rank:
Rank:
4/
Bottom 50%10
21986 Cole Rd
Carthage, NY 13619
(315) 493-5020
Carthage, NY 13619
(315) 493-5020
Grades: 5-8
| 930 students
Rank: #1010.
Clarke Middle School
(Math: 41% | Reading: 41%)
Rank:
Rank:
4/
Bottom 50%10
11060 Us Rt 11
Adams, NY 13605
(315) 232-4531
Adams, NY 13605
(315) 232-4531
Grades: 6-8
| 404 students
Rank: #1111.
Case Middle School
(Math: 41% | Reading: 35%)
Rank:
Rank:
3/
Bottom 50%10
1237 Washington St
Watertown, NY 13601
(315) 785-3870
Watertown, NY 13601
(315) 785-3870
Grades: 7-8
| 591 students
Rank: n/an/a
Jefferson-lewis-hamilton-herkimer-oneida Boces
Special Education School
20104 State Rte 3
Watertown, NY 13601
(315) 779-7010
Watertown, NY 13601
(315) 779-7010
Grades: K-12
| 299 students
Jefferson County ºÚÁÏÍø¹ÙÍø Schools (Closed)
School
Location
Grades
Students
Cape Vincent Correction Facility (Closed 2008)
Alternative School
Rt 12e Box 599
Cape Vincent, NY 13618
(315) 654-4100
Cape Vincent, NY 13618
(315) 654-4100
Grades: Inquire with school
| 2 students
6 Institute St
Adams, NY 13605
(315) 232-4841
Adams, NY 13605
(315) 232-4841
Grades: K-6
| 216 students
Jefferson County Jail (Closed 2004)
Alternative School
311 N Massey St
Watertown, NY 13601
Watertown, NY 13601
Grades: n/a
| n/a students
Watertown Correctional Facility (Closed 2008)
Alternative School
Dry Hl
Watertown, NY 13601
(315) 782-7490
Watertown, NY 13601
(315) 782-7490
Grades: Inquire with school
| n/a students
Frequently Asked Questions
What are the top ranked public middle schools in Jefferson County, NY?
The top ranked public middle schools in Jefferson County, NY include Thousand Islands Middle School, General Brown Junior-senior High School and Alexandria Central High School.
How many public middle schools are located in Jefferson County?
12 public middle schools are located in Jefferson County.
What is the racial composition of students in Jefferson County?
Jefferson County public middle schools minority enrollment is 18% of the student body (majority Hispanic), which is less than the New York public middle schools average of 63% (majority Hispanic).
Which public middle schools in Jefferson County are often viewed compared to one another?
Popular comparisons of public middle schools in Jefferson County include: Indian River Middle School vs. Carthage Middle School, Carthage Middle School vs. Indian River Middle School, Lyme Central School vs. Sackets Harbor Central School
Recent Articles
Opinion: Handcuffing in ºÚÁÏÍø¹ÙÍø Schools is a Gateway to More Violence
Some districts are banning handcuffing, while others are cuffing kindergarteners simply throwing a temper tantrum. Read this editorial to see why this author believes slapping the cuffs on children’s wrists only leads to more behavior issues and violence in their adult lives.
Whooping Cough: Should Vaccinations be Required for ºÚÁÏÍø¹ÙÍø School Enrollment?
Whopping cough is making a comeback, especially amongst children, prompting health officials to encourage pertussis vaccines and boosters. However, should the pertussis vaccine be required for public school enrollment? Learn about current proposed laws and its ramifications.
What are Common Core Standards and Why Do We Need Them?
With schools nationwide adopting common core standards, we’ll take a look at what they are, their benefits, and how they will change the face of public education.
