Atrium School Photo

Best Middlesex County Private Schools (2026)

For the 2026 school year, there are 232 private schools serving 32,296 students in Middlesex County, MA (there are 385 public schools, serving 216,401 public students). 13% of all K-12 students in Middlesex County, MA are educated in private schools (compared to the MA state average of 12%).
The top-ranked private schools in Middlesex County, MA include Concord Academy, Belmont Hill School, and The Fenn School.
The average tuition cost is $28,923, which is higher than the Massachusetts private school average tuition cost of $26,482.
23% of private schools in Middlesex County, MA are religiously affiliated (most commonly Catholic and Christian).

Top-Ranked Middlesex County Private Schools (2026)

School
Location
Quick Facts
The Brighton School
The Brighton School Photo
Special Program Emphasis
(10)
360 Water Street
Framingham, MA 01705
(508) 877-8200
Gr: PK-6 | 65 students Avg. class size: 18 students Extracurrculars: 4 Tuition listed
Cambridge Montessori School
Cambridge Montessori School Photo
Montessori School
(6)
161 Garden St
Cambridge, MA 02138
(617) 492-3410
Gr: NS-8 | 152 students Avg. class size: 15 students Tuition & acceptance rate listed
45 Georgian Road
Weston, MA 02493
(781) 642-8650
Gr: 9-12 | 320 students Avg. class size: 15 students Sports: 11 | Extracurrculars: 53 Tuition & acceptance rate listed
Fayerweather Street School
(2)
765 Concord Avenue
Cambridge, MA 02138
(617) 876-4746
Gr: PK-8 | 205 students Avg. class size: 20 students Sports: 3 | Extracurrculars: 12 Tuition & acceptance rate listed
Middlesex School
Middlesex School Photo - Eliot Hall
1400 Lowell Road
Concord, MA 01742
(978) 371-6524
Gr: 9-12 | 427 students Avg. class size: 12 students Sports: 20 | Extracurrculars: 71 Tuition & acceptance rate listed
Milestones Day School
Milestones Day School Photo - Milestones Day School
Special Education School
410 Totten Pond Road
Waltham, MA 02451
(781) 895-3200
Gr: K-12 | 63 students Avg. class size: 5 students Extracurrculars: 4
Nashoba Brooks School
Nashoba Brooks School Photo
(10)
200 Strawberry Hill Road
Concord, MA 01742
(978) 369-4591
Gr: PK-8 | 268 students Avg. class size: 12 students Sports: 8 | Extracurrculars: 11 Tuition & acceptance rate listed
Wellan Montessori School
Wellan Montessori School Photo
Montessori School
(4)
80 Crescent Avenue
Newton Center, MA 02459
(617) 969-4488
Gr: PK-8 | 320 students Avg. class size: 20 students Sports: 5 | Extracurrculars: 3 Tuition & acceptance rate listed
Atrium School
Atrium School Photo
(8)
69 Grove St
Watertown, MA 02472
(617) 923-4156
Gr: PK-8 | 115 students Avg. class size: 12 students Sports: 4 | Extracurrculars: 17 Tuition & acceptance rate listed
100 Summit Drive, Suite 200
Burlington, MA 01803
(877) 673-8893
Gr: 6-12 Tuition listed
Fusion Academy Newton
Fusion Academy Newton Photo - Each Fusion campus has a state-of-the-art music studio with professional-grade tools. Students can explore instruments, vocals, songwriting, DJ performing arts, and more.
320 Needham Street, Suite 100
Newton Upper Falls, MA 02464
(877) 673-8893
Gr: 6-12 Tuition listed
Montessori Escuela
Montessori Escuela Photo
Montessori School
107 Concord Road
Wayland, MA 01778
(508) 454-0631
Gr: NS-K | 55 students Avg. class size: 12 students Tuition & acceptance rate listed
New England Innovation Academy
New England Innovation Academy Photo
Special Program Emphasis
280 Locke Drive
Marlborough, MA 01752
(508) 205-4270
Gr: 6-12 | 116 students Avg. class size: 12 students Sports: 8 | Extracurrculars: 17 Tuition & acceptance rate listed
Academy Of Notre Dame
Academy Of Notre Dame Photo - Academy of Notre Dame Tyngsboro
(Catholic)
(9)
180 Middlesex Road
Tyngsboro, MA 01879
(978) 649-7611
Gr: NS-12 | 444 students Avg. class size: 15 students Sports: 15 | Extracurrculars: 28 Tuition & acceptance rate listed
Arlington Catholic High School
Arlington Catholic High School Photo
(Catholic)
(1)
16 Medford St
Arlington, MA 02474
(781) 646-7770
Gr: 9-12 | 456 students Avg. class size: 21 students Sports: 16 | Extracurrculars: 9 Tuition & acceptance rate listed
Austin Preparatory School
Austin Preparatory School Photo
(Catholic)
(6)
101 Willow St.
Reading, MA 01867
(781) 944-4900
Gr: 6-12 | 813 students Avg. class size: 16 students Sports: 20 | Extracurrculars: 22 Tuition & acceptance rate listed
Beaver Country Day School
Beaver Country Day School Photo
(1)
791 Hammond St
Chestnut Hill, MA 02467
(617) 738-2725
Gr: 6-12 | 490 students Avg. class size: 16 students Sports: 17 Tuition & acceptance rate listed
Belmont Day School
Belmont Day School Photo - Welcome to Belmont Day!
(3)
55 Day School Lane
Belmont, MA 02478
(617) 484-3078
Gr: PK-8 | 338 students Sports: 13
Belmont Hill School
Belmont Hill School Photo - Belmont Hill School campus located in Belmont, MA.
All-boys
350 Prospect Street
Belmont, MA 02478
(617) 993-5220
Gr: 7-12 | 471 students Avg. class size: 11 students Sports: 16 Tuition & acceptance rate listed
Birches School
Birches School Photo
(6)
100 Bedford Road
Lincoln, MA 01773
(781) 259-8100
Gr: PK-8 | 84 students Avg. class size: 16 students Tuition & acceptance rate listed
Brimmer and May School
Brimmer and May School Photo - The Hastings Center opens limitless possibilities for our students with our Innovation Space, Makerspace, STEAM classroom, and Digital Media Center.
(4)
69 Middlesex Road
Chestnut Hill, MA 02467
(617) 566-7462
Gr: PK-12 | 404 students Avg. class size: 12 students Sports: 10 | Extracurrculars: 23 Tuition listed
80 Gerry's Landing Rd
Cambridge, MA 02138
(617) 547-6100
Gr: PK-12 | 1,043 student Avg. class size: 15 students Sports: 19 | Extracurrculars: 68 Tuition listed
The Cambridge Matignon School
The Cambridge Matignon School Photo
(Catholic)
(4)
1 Matignon Road
Cambridge, MA 02140
(617) 876-1212
Gr: 9-12 | 304 students Avg. class size: 18 students Sports: 15 | Extracurrculars: 16 Tuition listed
Carroll School
Carroll School Photo - Educational technology integrated into in the daily curriculum
Special Education School
(2)
25 Baker Bridge Road
Lincoln, MA 01773
(781) 259-8342
Gr: 1-9 | 447 students Avg. class size: 7 students Sports: 9 | Extracurrculars: 8 Tuition & acceptance rate listed
785 Beaver Street
Waltham, MA 02452
(781) 314-0804
Gr: 7-12 | 200 students Avg. class size: 10 students Sports: 11 | Extracurrculars: 26 Tuition & acceptance rate listed
The Chestnut Hill School
The Chestnut Hill School Photo - The Chestnut Hill School is conveniently located approximately 5 miles from downtown Boston
(9)
428 Hammond Street
Chestnut Hill, MA 02467
(617) 566-4394
Gr: NS-6 | 237 students Avg. class size: 15 students Sports: 4 | Extracurrculars: 6 Tuition listed
Cheverus Catholic School
(Catholic)
(2)
30 Irving St
Malden, MA 02148
(781) 324-6584
Gr: PK-8 | 426 students
Concord Academy
Concord Academy Photo
166 Main Street
Concord, MA 01742
(978) 402-2250
Gr: 9-12 | 416 students Avg. class size: 12 students Sports: 17 | Extracurrculars: 115 Tuition & acceptance rate listed
Cotting School
Special Education School
453 Concord Ave
Lexington, MA 02421
(781) 862-7323
Gr: K-12 | 103 students
Dearborn Academy
Dearborn Academy Photo
Special Education School
(1)
575 WASHINGTON STREET
Newton, MA 02458
(781) 641-5992
Gr: 3-12 | 57 students Avg. class size: 7 students Tuition & acceptance rate listed
Eliot-pearson Children's School
Alternative School
105 College Ave
Medford, MA 02155
(617) 627-2424
Gr: PK-2 | 60 students
Eliot-Pearson Children's School
Eliot-Pearson Children's School Photo
Daycare / Preschool
105 College Avenue
Medford, MA 02155
(617) 627-3434
Gr: PK-K | 68 students Avg. class size: 18 students Tuition & acceptance rate listed
The Fenn School
The Fenn School Photo
All-boys
(9)
516 Monument Street
Concord, MA 01742
(978) 318-3606
Gr: 4-9 | 314 students Avg. class size: 14 students Sports: 13 | Extracurrculars: 17 Tuition & acceptance rate listed
The Fessenden School
The Fessenden School Photo
All-boys
250 Waltham Street
West Newton, MA 02465
(617) 630-2300
Gr: PK-9 | 541 students Avg. class size: 12 students Sports: 18 | Extracurrculars: 15 Tuition listed
Gann Academy-the New Jewish High School
Gann Academy-the New Jewish High School Photo - Gann students volunteer at Cradles to Crayons in Boston.
Special Program Emphasis (Jewish)
333 Forest Street
Waltham, MA 02452
(781) 642-6800
Gr: 9-12 | 321 students Avg. class size: 16 students Sports: 11 Tuition listed
Show 100 more private schools in Middlesex County, MA (out of 232 total schools)
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[+] Show Closed Private Schools in Middlesex County, Massachusetts

Middlesex County Private Schools (Closed)

School
Location
Quick Facts
1651 Bridge Street
Dracut, MA 01826
(978) 458-5885
Gr: PK-K | 20 students Avg. class size: 10 students Tuition listed
620 Washington Street
Winchester, MA 01890
(781) 729-0030
Gr: PK-8 | 122 students
1841 Trapelo Road
Waltham, MA 02451
(781) 890-1865
Gr: PK-6 | 92 students
19 Forest St
Marlborough, MA 01752
(866) 202-8593
Gr: NS-K
29 Oaks Rd
Framingham, MA 01702
(508) 250-8384
Gr: NS-PK | 40 students Avg. class size: 14 students
85 Bishop Allen Dr
Cambridge, MA 02139
(617) 547-5554
Gr: K-1 | 6 students
198 Main Street
Hudson, MA 01749
(978) 562-6701
Gr: 9-12 | 195 students
306 Highland Avenue
Malden, MA 02148
(781) 322-0129
Gr: PK-8 | 228 students
53 Summer Street
Everett, MA 02149
(617) 387-8304
Gr: PK-8 | 172 students
25 Washington Ct
Marlborough, MA 01752
(508) 460-3400
Gr: PK-8 | 156 students
848 Central St
Framingham, MA 01701
(508) 879-5110
Gr: PK-12 | 167 students Avg. class size: 5 students Tuition listed
17 Franklin Street
Somerville, MA 02145
(617) 628-7775
Gr: K-8 | 148 students
273 Union Avenue
Framingham, MA 01702
(508) 875-7646
Gr: 9-12 | 230 students Avg. class size: 16 students Tuition listed
Merrimack Valley Hebrew Academy (Closed 2000)
Special Program Emphasis (Jewish)
18 Academy Drive
Lowell, MA 01851
(978) 452-6842
Gr: PK-6 | 41 students
790 Centre St
Newton, MA 02458
(617) 969-2260
Gr: 7-12 | 135 students Tuition listed
3 Winn Street
Burlington, MA 01803
(781) 272-0090
Gr: NS-12 | 67 students Avg. class size: 6 students Tuition listed
190 Nichols Street
Everett, MA 02149
(617) 387-8034
Gr: PK-8 | 218 students Avg. class size: 21 students Tuition listed
14 Winship Drive
Wakefield, MA 01880
(781) 245-0214
Gr: 9-12 | 198 students Avg. class size: 20 students
195 Elm St
Everett, MA 02149
(617) 387-4249
Gr: PK-K | 16 students
888 Broadway
Everett, MA 02149
(617) 389-0240
Gr: 7-12 | 341 students
Riverside School (Closed 2015)
Special Education School
34 Berry Rd
Lowell, MA 01854
(978) 538-0286
Gr: 6-12 | 14 students
122 Andrews Street
Lowell, MA 01852
(978) 453-4751
Gr: PK-8 | 203 students
50 Thurston St.
Somerville, MA 02145
(617) 666-4927
Gr: PK-8 | 160 students
St. Anne Montessori School (Closed 2013)
Montessori School (Catholic)
720 Boston Post Road East
Marlborough, MA 01752
(508) 597-1416
Gr: PK-K | 36 students Avg. class size: 36 students Tuition listed
480 Somerville Avenue
Somerville, MA 02143
(617) 623-0995
Gr: K-8 | 210 students
1 Saint Clare Rd
Medford, MA 02155
(781) 395-9170
Gr: K-9 | 231 students
175 Main Street
Waltham, MA 02453
(781) 899-3644
Gr: PK-8 | 153 students Avg. class size: 15 students Tuition listed
77 Boisvert St
Lowell, MA 01850
(978) 458-7594
Gr: PK-8 | 247 students
368 High St
Lowell, MA 01852
(978) 453-2360
Gr: K-8 | 124 students
560 Waverly St
Framingham, MA 01702
(508) 872-8188
Gr: NS-9 | 189 students
600 Staples Dr
Framingham, MA 17024
(508) 253-0555
Gr: PK-K | 33 students
68 Dracut St
Lowell, MA 01854
(978) 453-4114
Gr: PK-8 | 224 students
160 Lexington St
Belmont, MA 02478
(617) 489-6600
Gr: 9-12 | 39 students Tuition listed

Overview

This County (Middlesex County)
This State (MA)
# Schools
237 Schools

Student Body:

# Students
32,296 Students
127,050 Students
% Average Students of Color
31%
31%

Academics and Faculty:

# Teachers
4,210 Teachers
15,733 Teachers
Average Student-Teacher Ratio
8:1
8:1
% Average Faculty w/Advanced Degree
73%
67%
Average Class Size
14 students
14 students
Average Number of AP Courses
15 courses
16 courses
Average SAT score
1320
(Out of 1600)
1289
Average ACT score
29
(Out of 36)
29

Tuition and Acceptance Rate:

Average Yearly Tuition Cost
$28,923
$26,482
Average Summer Program Cost
$2,333
$2,893
Average % on Financial Aid
33%
36%
Average Financial Aid Grant
$24,947
$17,158
Average Acceptance Rate
60%
71%
Average Endowment Size
$77.84 million
$85.4 million

Students by Ethnicity:

0.62
0.63
# American Indian Students
33 Students
187 Students
% American Indian Students
n/a
n/a
# Asian Students
1,916 Students
6,793 Students
% Asian Students
6%
5%
# Hispanic Students
1,555 Students
7,583 Students
% Hispanic Students
5%
6%
# Black Students
1,684 Students
8,704 Students
% Black Students
6%
7%
# White Students
16,809 Students
67,962 Students
% White Students
54%
55%
# Hawaiian Students
17 Students
83 Students
% Hawaiian Students
n/a
n/a
# Two or more races Students
n/a
n/a
% of Two or more races Students
n/a
n/a
# Others Students
9,002 Students
33,443 Students
% of Others Students
29%
27%
All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars
17 extracurriculars
13 extracurriculars
Average Number of Sports
9 sports
9 sports

Frequently Asked Questions

What are the top-ranked private schools in Middlesex County, MA?
The top-ranked private schools in Middlesex County, MA include Concord Academy, Belmont Hill School, and The Fenn School.
How many private schools are located in Middlesex County?
232 private schools are located in Middlesex County.
How much do private schools cost in Middlesex County?
The average tuition cost is $28,923, which is higher than the Massachusetts private school average tuition cost of $26,482.
How diverse are private schools in Middlesex County?
Middlesex County private schools are approximately 31% minority students, which is same as the Massachusetts private school average of 31%.
What percentage of students in Middlesex County go to private school?
13% of all K-12 students in Middlesex County are educated in private schools (compared to the MA state average of 12%).
What percentage of private schools are religiously affiliated in Middlesex County?
23% of private schools in Middlesex County are religiously affiliated (most commonly Catholic and Christian).
Which private schools in Middlesex County are often viewed compared to one another?

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