#1 Largest Private Schools in Hillsborough County, NH
Presentation of Mary Academy
Independent Catholic school · Grades Pre-K–8
439 students
Hudson, NH
BOverall grade439 students18 students per teacher
2026 lists
Largest Private Schools in Hillsborough County, NH
The private schools in Hillsborough County, NH with the most students. Top 25 of 25 schools.
#2 Largest Private Schools in Hillsborough County, NH
High Mowing School
Independent school · Grades Pre-K–12
333 students
Wilton, NH
B+Overall grade333 students11 students per teacher
#3 Largest Private Schools in Hillsborough County, NH
Trinity High School
Diocesan school · Grades 9–12
327 students
Manchester, NH
A+Overall grade327 students9 students per teacher
#4 Largest Private Schools in Hillsborough County, NH
World Academy
Independent school · Grades K–8
309 students
Nashua, NH
B-Overall grade309 students11 students per teacher
#5 Largest Private Schools in Hillsborough County, NH
South Merrimack Christian Academy
Baptist school · Grades Pre-K–12
238 students
Merrimack, NH
BOverall grade238 students8 students per teacher
#6 Largest Private Schools in Hillsborough County, NH
Crossroads Christian School
Baptist school · Grades Pre-K–12
152 students
Pelham, NH
BOverall grade152 students7 students per teacher
#7 Largest Private Schools in Hillsborough County, NH
St. Benedict Academy
Diocesan school · Grades Pre-K–6
128 students
Manchester, NH
AOverall grade128 students10 students per teacher
#8 Largest Private Schools in Hillsborough County, NH
Mt. St. Mary Academy
Independent Catholic school · Grades Pre-K–6
114 students
Manchester, NH
B+Overall grade114 students15 students per teacher
#9 Largest Private Schools in Hillsborough County, NH
Holy Family Academy
Independent Catholic school · Grades 7–12
108 students
Manchester, NH
A+Overall grade108 students10 students per teacher
#10 Largest Private Schools in Hillsborough County, NH
St. Joseph Regional Jr. High School
Independent Catholic school · Grades 7–8
106 students
Manchester, NH
AOverall grade106 students11 students per teacher
#11 Largest Private Schools in Hillsborough County, NH
The Well School
Alternative school · Grades K–8
102 students
Peterborough, NH
B+Overall grade102 students8 students per teacher
#12 Largest Private Schools in Hillsborough County, NH
Cardinal Lacroix Academy
Parish school · Grades Pre-K–6
98 students
Manchester, NH
AOverall grade98 students12 students per teacher
#13 Largest Private Schools in Hillsborough County, NH
Hollis Montessori School
Montessori school · Grades Pre-K–8
88 students
Hollis, NH
BOverall grade88 students10 students per teacher
#14 Largest Private Schools in Hillsborough County, NH
2nd Nature Academy
Independent school · Grades Pre-K–11
80 students
Nashua, NH
AOverall grade80 students7 students per teacher
#15 Largest Private Schools in Hillsborough County, NH
North End Montessori School
Montessori school · Grades Pre-K–4
56 students
Manchester, NH
AOverall grade56 students4 students per teacher
#16 Largest Private Schools in Hillsborough County, NH
Bedford Academy
Independent school · Grades Pre-K–5
49 students
Bedford, NH
A-Overall grade49 students7 students per teacher
#17 Largest Private Schools in Hillsborough County, NH
Hillsboro Christian School
Baptist school · Grades Pre-K–12
47 students
Hillsborough, NH
B+Overall grade47 students7 students per teacher
#18 Largest Private Schools in Hillsborough County, NH
Wediko School at the Home for Little Wanderers
Special education school · Grades 6–12
46 students
Windsor, NH
B+Overall grade46 students5 students per teacher
#19 Largest Private Schools in Hillsborough County, NH
Wediko School at the Home for Little Wanderers
Special education school · Grades 6–12
46 students
Windsor, NH
A-Overall grade46 students5 students per teacher
#20 Largest Private Schools in Hillsborough County, NH
Seven Hills at Crotched Mountain
Special education school · Ungraded
39 students
Greenfield, NH
B+Overall grade39 students7 students per teacher
#21 Largest Private Schools in Hillsborough County, NH
Tabernacle Christian School
Baptist school · Grades Pre-K–12
36 students
Litchfield, NH
AOverall grade36 students4 students per teacher
#22 Largest Private Schools in Hillsborough County, NH
Heritage Baptist Academy
Baptist school · Grades K–12
27 students
Nashua, NH
AOverall grade27 students5 students per teacher
#23 Largest Private Schools in Hillsborough County, NH
New Morning School
Early childhood program · Grades Pre-K–K
24 students
Bedford, NH
A-Overall grade24 students7 students per teacher
#24 Largest Private Schools in Hillsborough County, NH
Country Village Montessori School
Montessori school · Grades Pre-K–5
23 students
Amherst, NH
AOverall grade23 students5 students per teacher
From official public records, updated October 2026.