#1 Largest Private Schools in Merrimack County, NH
St. Pauls School
Episcopal school · Grades 9–12
548 students
Concord, NH
A+Overall grade548 students9 students per teacher
2026 lists
Largest Private Schools in Merrimack County, NH
The private schools in Merrimack County, NH with the most students. Top 14 of 14 schools.
#2 Largest Private Schools in Merrimack County, NH
Proctor Academy
Independent school · Grades 9–12
381 students
Andover, NH
A+Overall grade381 students5 students per teacher
#3 Largest Private Schools in Merrimack County, NH
Concord Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
324 students
Concord, NH
B-Overall grade324 students12 students per teacher
#4 Largest Private Schools in Merrimack County, NH
Bishop Brady High School
Diocesan school · Grades 9–12
259 students
Concord, NH
AOverall grade259 students10 students per teacher
#5 Largest Private Schools in Merrimack County, NH
Trinity Christian School
Baptist school · Grades K–12
244 students
Concord, NH
B-Overall grade244 students11 students per teacher
#6 Largest Private Schools in Merrimack County, NH
61 South State St.
Diocesan school · Grades Pre-K–8
173 students
Concord, NH
B-Overall grade173 students28 students per teacher
#7 Largest Private Schools in Merrimack County, NH
Spaulding Academy and Family Services
Special education school · Grades K–12
70 students
Northfield, NH
B+Overall grade70 students4 students per teacher
#8 Largest Private Schools in Merrimack County, NH
Green Valley School
Montessori school · Grades Pre-K–8
53 students
Pembroke, NH
B+Overall grade53 students6 students per teacher
#9 Largest Private Schools in Merrimack County, NH
Parker Academy
Special education school · Grades 6–12
35 students
Concord, NH
A-Overall grade35 students3 students per teacher
#10 Largest Private Schools in Merrimack County, NH
The Beech Hill School
Independent school · Grades 5–8
35 students
Hopkinton, NH
AOverall grade35 students6 students per teacher
#11 Largest Private Schools in Merrimack County, NH
Meeting House Montessori School
Montessori school · Grades Pre-K–4
26 students
Bow, NH
B+Overall grade26 students13 students per teacher
#12 Largest Private Schools in Merrimack County, NH
Meeting House Montessori School
Montessori school · Grades Pre-K–4
25 students
Bow, NH
B+Overall grade25 students13 students per teacher
#13 Largest Private Schools in Merrimack County, NH
Second Start Alternative High School
Alternative school · Grades 10–12
24 students
Concord, NH
A-Overall grade24 students6 students per teacher
#14 Largest Private Schools in Merrimack County, NH
Pine Haven Boycenter
Special education school · Grades 1–8
20 students
Allenstown, NH
A-Overall gradeAll boys20 students5 students per teacher
From official public records, updated October 2026.