#1 Largest Private Schools in Sullivan County, NH
Kimball Union Academy
Independent school · Grades 9–12
338 students
Meriden, NH
BOverall grade338 students8 students per teacher
2026 lists
Largest Private Schools in Sullivan County, NH
The private schools in Sullivan County, NH with the most students. Top 6 of 6 schools.
#2 Largest Private Schools in Sullivan County, NH
Mount Royal Academy
Independent Catholic school · Grades Pre-K–12
179 students
Sunapee, NH
A+Overall grade179 students6 students per teacher
#3 Largest Private Schools in Sullivan County, NH
Claremont Christian Academy
Baptist school · Grades Pre-K–12
132 students
Claremont, NH
B+Overall grade132 students6 students per teacher
#4 Largest Private Schools in Sullivan County, NH
Claremont Christian Academy
Baptist school · Grades K–12
130 students
Claremont, NH
BOverall grade130 students6 students per teacher
#5 Largest Private Schools in Sullivan County, NH
Newport Montessori School
Montessori school · Grades Pre-K–8
85 students
Newport, NH
B+Overall grade85 students8 students per teacher
#6 Largest Private Schools in Sullivan County, NH
Granite Hill School
Special education school · Grades 6–12
41 students
Newport, NH
A-Overall grade41 students3 students per teacher
From official public records, updated October 2026.