Private School Review - Established 2003
Bay Farm Montessori Academy
Stoneleigh-Burnham School Top 19 ยท Highest Avg. SAT Score (MA)
Nashoba Brooks School

Best Massachusetts Private Schools Belonging to National Association of Independent Schools (NAIS) (2026-27)

For the 2026-27 school year, there are 124 private schools belonging to National Association of Independent Schools (NAIS) serving 35,743 students in Massachusetts. You can also find more schools membership associations in Massachusetts.
The top ranked private schools belonging to National Association of Independent Schools (NAIS) in Massachusetts include Wilbraham & Monson Academy, Middlesex School, and Belmont Hill School.
The average tuition cost is $45,859, which is higher than the Massachusetts private school average tuition cost of $26,503.
19% of private schools belonging to National Association of Independent Schools (NAIS) in Massachusetts are religiously affiliated (most commonly Catholic and Episcopal).

Quick Facts (2026-27)

  • # Private Schools: 124

Quick Facts (2026-27)

  • # Private Schools: 124

Top Ranked Private Schools Belonging to National Association of Independent Schools (NAIS) in Massachusetts (2026-27)

Bay Farm Montessori Academy Photo
Bay Farm Montessori Academy
Gr: NS-6 | 168 students
Avg. class size: 20 students
Sports: 13 | Extracurriculars: 6
Montessori School
145 Loring Street
Duxbury, MA 02332
(781) 934-7101
(9)
View Profile
Cambridge Montessori School Photo
Cambridge Montessori School
Gr: NS-8 | 152 students
Avg. class size: 15 students
Montessori School
161 Garden St
Cambridge, MA 02138
(617) 492-3410
(6)
View Profile
The Cambridge School Of Weston Photo
The Cambridge School Of Weston
Gr: 9-12 | 310 students
Avg. class size: 13 students
Sports: 11 | Extracurriculars: 53
45 Georgian Road
Weston, MA 02493
(781) 642-8650
(2)
View Profile
Chapel Hill Chauncy Hall School Photo
Chapel Hill Chauncy Hall School
Gr: 8-12 | 200 students
Avg. class size: 10 students
Sports: 11 | Extracurriculars: 26
785 Beaver Street
Waltham, MA 02452
(781) 314-0804
(1)
View Profile
Commonwealth School Photo
Commonwealth School
Gr: 9-12 | 164 students
Avg. class size: 9 students
Sports: 9 | Extracurriculars: 45
151 Commonwealth Avenue
Boston, MA 02116
(617) 266-7525
(1)
View Profile
Dedham Country Day School Photo
Dedham Country Day School
Gr: PK-8 | 309 students
Avg. class size: 12 students
Sports: 11 | Extracurriculars: 5
90 Sandy Valley Road
Dedham, MA 02026
(781) 329-0850
(1)
View Profile
Fay School Photo
Fay School
Gr: K-9
Avg. class size: 14 students
Sports: 16 | Extracurriculars: 14
48 Main Street
Southborough, MA 01772
(508) 490-8201
(9)
View Profile
Map of Fayerweather Street School
Fayerweather Street School
Gr: PK-8 | 205 students
Avg. class size: 20 students
Sports: 3 | Extracurriculars: 12
765 Concord Avenue
Cambridge, MA 02138
(617) 876-4746
(2)
View Profile
Kingsley Montessori School Photo
Kingsley Montessori School
Gr: NS-6 | 301 students
Avg. class size: 17 students
Sports: 14
Montessori School
26 Exeter Street
Boston, MA 02116
(617) 226-4927
(3)
View Profile
Middlesex School Photo
Middlesex School
Gr: 9-12 | 429 students
Avg. class size: 12 students
Sports: 20 | Extracurriculars: 71
1400 Lowell Road
Concord, MA 01742
(978) 371-6524
View Profile
Miss Hall's School Photo
Miss Hall's School
Gr: 9-12 | 200 students
Avg. class size: 11 students
Sports: 14 | Extracurriculars: 55
All-girls | Specialized Curriculum
492 Holmes Road
Pittsfield, MA 01201
(413) 499-1300
(11)
View Profile
Nashoba Brooks School Photo
Nashoba Brooks School
Gr: PK-8 | 268 students
Avg. class size: 12 students
Sports: 8 | Extracurriculars: 11
200 Strawberry Hill Road
Concord, MA 01742
(978) 369-4591
(10)
View Profile
The Sage School Photo
The Sage School
Gr: NS-8 | 135 students
Avg. class size: 12 students
Extracurriculars: 7
Specialized Curriculum
171 Mechanic St
Foxboro, MA 02035
(508) 543-9619
(12)
View Profile
Springfield Commonwealth Academy Photo
Springfield Commonwealth Academy
Gr: 6-12 | 125 students
Avg. class size: 12 students
Sports: 13 | Extracurriculars: 3
1 Ames Hill Dr
Springfield, MA 01105
(413) 203-9801
(1)
View Profile
Stoneleigh-Burnham School Photo
Stoneleigh-Burnham School
Gr: 7-12 | 140 students
Avg. class size: 10 students
Sports: 9 | Extracurriculars: 17
All-girls
574 Bernardston Road
Greenfield, MA 01301
(413) 774-2711
(5)
View Profile
Tabor Academy Photo
Tabor Academy
Gr: 9-12 | 508 students
Avg. class size: 12 students
Sports: 16 | Extracurriculars: 72
246 Front Street
Marion, MA 02738
(508) 291-8300
(7)
View Profile
Wilbraham & Monson Academy Photo
Wilbraham & Monson Academy
Gr: 6-12 | 412 students
Avg. class size: 12 students
Sports: 23 | Extracurriculars: 36
423 Main Street
Wilbraham, MA 01095
(413) 596-6811
(4)
View Profile
The Woodward School Photo
The Woodward School
Gr: 6-12 | 75 students
Avg. class size: 8 students
Sports: 5 | Extracurriculars: 22
All-girls
1102 Hancock St
Quincy, MA 02169
(617) 773-5610
(7)
View Profile
The Advent School Photo
The Advent School
Gr: PK-6 | 129 students
Avg. class size: 13 students
Sports: 6 | Extracurriculars: 20
Alternative School
15 Brimmer Street
Boston, MA 02108
(617) 742-0520
(1)
View Profile
Atrium School Photo
Atrium School
Gr: PK-8 | 115 students
Avg. class size: 12 students
Sports: 4 | Extracurriculars: 17
69 Grove St
Watertown, MA 02472
(617) 923-4156
(8)
View Profile
Show 89 more private schools in Massachusetts (out of 124 total schools)
Loading...

Frequently Asked Questions

What are the top ranked private schools belonging to National Association of Independent Schools (NAIS) in Massachusetts?
The top ranked private schools belonging to National Association of Independent Schools (NAIS) in Massachusetts include Wilbraham & Monson Academy, Middlesex School, and Belmont Hill School.
How many private schools belonging to National Association of Independent Schools (NAIS) are located in Massachusetts?
124 private schools belonging to National Association of Independent Schools (NAIS) are located in Massachusetts.
How much do private schools belonging to National Association of Independent Schools (NAIS) cost in Massachusetts?
The average tuition cost is $45,859, which is higher than the Massachusetts private school average tuition cost of $26,503.
How diverse are private schools belonging to National Association of Independent Schools (NAIS) in Massachusetts?
Massachusetts private schools belonging to National Association of Independent Schools (NAIS) are approximately 27% minority students, which is lower than the Massachusetts private school average of 32%.
What percentage of private schools belonging to National Association of Independent Schools (NAIS) are religiously affiliated in Massachusetts?
19% of private schools belonging to National Association of Independent Schools (NAIS) in Massachusetts are religiously affiliated (most commonly Catholic and Episcopal).
124
Private Schools
35,743
Students
$45,859
Avg. Tuition
27%
Students of Color
6:1
Student-Teacher Ratio

Recent Articles

When Your Child Outpaces the Private School Curriculum
When Your Child Outpaces the Private School Curriculum
Learn what parents can do when a child finishes private school coursework early, including acceleration, curriculum compacting, advanced classes, enrichment, and signs the school needs a new plan.
How Much Teacher Access Does Your Child Get?
How Much Teacher Access Does Your Child Get?
Learn how to evaluate teacher access at private schools, including extra-help time, advising, communication, academic support, and the questions families should ask before choosing a school today.
When a Private School Teacher Leaves Midyear
When a Private School Teacher Leaves Midyear
When a private school teacher leaves midyear, parents need clear answers. Learn what schools should do, what children may experience, and when a departure signals deeper concerns.

Quick Links

SCHOOL SEARCH TOOLS:
SCHOOL BY TYPE (MA):
OPEN-HOUSES & JOBS:
PUBLIC & BOARDING SCHOOLS:
PRIVATE SCHOOL DATA:

Most Popular Articles

Changing Schools and Moving to New Area
Changing Schools and Moving to New Area
 Athletics Are Not Optional
Athletics Are Not Optional
Massachusetts Private Schools By Tuition Cost
Massachusetts Private Schools By Tuition Cost

More Articles

Strategic School Choices
Advanced Learning Frameworks
Timeless School Insights
Premier School Models
Global Educator Empowerment