For the 2025 school year, there is 1 private high school serving 81 students in Lewis County, NY.
100% of private high schools in Lewis County, NY are religiously affiliated (most commonly Mennonite).
Private High Schools in Lewis County (2025)
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
Frequently Asked Questions
How many private high schools are located in Lewis County, NY?
1 private high schools are located in Lewis County, NY.
What percentage of private high schools are religiously affiliated in Lewis County?
100% of private high schools in Lewis County are religiously affiliated (most commonly Mennonite).
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