For the 2025-26 school year, there is 1 private school serving 81 students in Lewis County, NY (there are 13 public schools, serving 4,161 public students). 2% of all K-12 students in Lewis County, NY are educated in private schools (compared to the NY state average of 15%).
100% of private schools in Lewis County, NY are religiously affiliated (most commonly Mennonite).
Private Schools in Lewis County (2025-26)
School
Location
Quick Facts
River Valley Mennonite School
Alternative School (Mennonite)
5473 State Route 410
Castorland, NY 13620
(315) 493-0187
Castorland, NY 13620
(315) 493-0187
Gr: K-12 | 81 students Avg. class size: 7 students Sports: 4 | Extracurrculars: 2 Tuition listed
Lewis County Private Schools (Closed)
School
Location
Quick Facts
16568 County Route 161
Watertown, NY 13601
Watertown, NY 13601
Gr: 1-8 | 17 students
Crystal Light Mennonite School (Closed 2015)
(Mennonite)
9607 Highland Ave
Castorland, NY 13620
(315) 486-1302
Castorland, NY 13620
(315) 486-1302
Gr: 1-9 | 51 students
Denmark Mennonite School (Closed 2025)
(Mennonite)
10217 St Route 26
Lowville, NY 13367
(315) 212-4224
Lowville, NY 13367
(315) 212-4224
Gr: 1-7 | 8 students
Frequently Asked Questions
How many private schools are located in Lewis County, NY?
1 private schools are located in Lewis County, NY.
What percentage of students in Lewis County go to private school?
2% of all K-12 students in Lewis County are educated in private schools (compared to the NY state average of 15%).
What percentage of private schools are religiously affiliated in Lewis County?
100% of private schools in Lewis County are religiously affiliated (most commonly Mennonite).
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