#1 Largest Private Schools in Manchester, NH
Trinity High School
Diocesan school · Grades 9–12
327 students
Manchester, NH
A+Overall grade327 students9 students per teacher
2026 lists
Largest Private Schools in Manchester, NH
The private schools in Manchester, NH with the most students. Top 8 of 8 schools.
#2 Largest Private Schools in Manchester, NH
St. Benedict Academy
Diocesan school · Grades Pre-K–6
128 students
Manchester, NH
AOverall grade128 students10 students per teacher
#3 Largest Private Schools in Manchester, NH
Mt. St. Mary Academy
Independent Catholic school · Grades Pre-K–6
114 students
Manchester, NH
B+Overall grade114 students15 students per teacher
#4 Largest Private Schools in Manchester, NH
Holy Family Academy
Independent Catholic school · Grades 7–12
108 students
Manchester, NH
A+Overall grade108 students10 students per teacher
#5 Largest Private Schools in Manchester, NH
St. Joseph Regional Jr. High School
Independent Catholic school · Grades 7–8
106 students
Manchester, NH
AOverall grade106 students11 students per teacher
#6 Largest Private Schools in Manchester, NH
Cardinal Lacroix Academy
Parish school · Grades Pre-K–6
98 students
Manchester, NH
AOverall grade98 students12 students per teacher
#7 Largest Private Schools in Manchester, NH
North End Montessori School
Montessori school · Grades Pre-K–4
56 students
Manchester, NH
AOverall grade56 students4 students per teacher
#8 Largest Private Schools in Manchester, NH
St. Peter's Home
Independent Catholic school · Grades Pre-K–K
20 students
Manchester, NH
B+Overall grade20 students8 students per teacher
From official public records, updated October 2026.