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Average Private School Endowment in Massachusetts

The average private school endowment in Massachusetts is $94.3M (2026-27).
The private school in Massachusetts with the highest endowment is Phillips Academy Andover, with a endowment of $1326M.

Quick Facts (26-27)

  • # MA Schools Ranked: 54
  • Top 20 Range (Endowment): $60M–$1,326M
  • MA School Avg.: $109M
  • National School Avg.: $24M

Quick Facts (26-27)

  • # MA Schools Ranked: 54
  • Top 20 Range (Endowment): $60M–$1,326M
  • MA School Avg.: $109M
  • National School Avg.: $24M

Massachusetts Average Endowment (Trends)

Total Growth: (-21.3%) (-$27.8 million since 2017)

Year National avg Massachusetts (MA) avg YoY Change ($) YoY Change (%)
2025 $40 million $102.5 million ▼ -$3.4 million ▼ -3.2%
2024 $39 million $105.9 million ▲ +$2.3 million ▲ +2.2%
2023 $39 million $103.5 million ▲ +$2.9 million ▲ +2.9%
2022 $40 million $100.6 million ▼ -$2.2 million ▼ -2.2%
2021 $40 million $102.9 million ▼ -$1.2 million ▼ -1.2%
2020 $40 million $104.1 million ▼ -$3.5 million ▼ -3.3%
2019 $40 million $107.6 million ▼ -$20.4 million ▼ -15.9%
2018 $43 million $127.9 million ▼ -$2.3 million ▼ -1.8%
2017 $45 million $130.2 million — —
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Source: National Center for Education Statistics (NCES) Private School Universe Survey (PSS), direct school submissions, and proprietary website research and analysis by Private School Review.

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Show school map — Massachusetts (endowment range: $60M–$1,326M, avg $109M)
Endowment Range: $16M $1326M Avg. Endowment: $162.7M

Average Private School Endowment in Massachusetts (2026-27)

Showing 54 schools
Phillips Academy Andover Photo
#1Phillips Academy Andover
Gr: 9-12 | 1,154 students
Avg. class size: 13 students
Sports: 25 | Extracurriculars: 54
180 Main Street
Andover, MA 01810
(978) 749-4050
(1)
$1,326endowment
View Profile
Deerfield Academy Photo
#2Deerfield Academy
Gr: 9-12 | 651 students
Avg. class size: 12 students
Sports: 24 | Extracurriculars: 44
7 Boyden Lane
Deerfield, MA 01342
(413) 774-1400
$920endowment
View Profile
Groton School Photo
#3Groton School
Gr: 8-12 | 379 students
Avg. class size: 11 students
Sports: 14
Episcopal
282 Farmers Row
Groton, MA 01450
(978) 448-3363
$611endowment
View Profile
Milton Academy Photo
#4Milton Academy
Gr: K-12 | 1,020 students
Avg. class size: 14 students
Sports: 19 | Extracurriculars: 56
170 Centre Street
Milton, MA 02186
(617) 898-1798
$408endowment
View Profile
Middlesex School Photo
#5Middlesex School
Gr: 9-12 | 429 students
Avg. class size: 12 students
Sports: 20 | Extracurriculars: 71
1400 Lowell Road
Concord, MA 01742
(978) 371-6524
$326endowment
View Profile
Berkshire School Photo
#6Berkshire School
Gr: 9-12 | 409 students
Avg. class size: 12 students
Sports: 20 | Extracurriculars: 2
245 North Undermountain Road
Sheffield, MA 01257
(413) 229-1003
(1)
$195endowment
View Profile
Northfield Mount Hermon Photo
#7Northfield Mount Hermon
Gr: 9-12 | 630 students
Avg. class size: 13 students
Sports: 23 | Extracurriculars: 43
One Lamplighter Way
Gill, MA 01354
(413) 498-3227
(2)
$185endowment
View Profile
Belmont Hill School Photo
#8Belmont Hill School
Gr: 7-12 | 471 students
Avg. class size: 11 students
Sports: 16
All-boys
350 Prospect Street
Belmont, MA 02478
(617) 993-5220
$172endowment
View Profile
St. Mark's School Photo
#9St. Mark's School
Gr: 9-12 | 383 students
Avg. class size: 11 students
Sports: 15 | Extracurriculars: 74
Episcopal
25 Marlboro Road
Southborough, MA 01772
(508) 786-6000
(2)
$150endowment
View Profile
Dana Hall School Photo
#10Dana Hall School
Gr: 5-12 | 441 students
Avg. class size: 12 students
Sports: 16 | Extracurriculars: 36
All-girls
45 Dana Road
Wellesley, MA 02482
(781) 489-1331
(1)
$120endowment
View Profile
The Governors Academy Photo
#11The Governors Academy
Gr: 9-12 | 405 students
Avg. class size: 11 students
Sports: 17
1 Elm St
Byfield, MA 01922
(978) 465-1763
(1)
$110endowment
View Profile
Brooks School Photo
#12Brooks School
Gr: 9-12 | 351 students
Avg. class size: 12 students
Sports: 16 | Extracurriculars: 28
Episcopal
1160 Great Pond Road
North Andover, MA 01845
(978) 725-6255
$102endowment
View Profile
Concord Academy Photo
#13Concord Academy
Gr: 9-12 | 431 students
Avg. class size: 12 students
Sports: 17 | Extracurriculars: 115
166 Main Street
Concord, MA 01742
(978) 402-2250
$95endowment
View Profile
Shady Hill School Photo
#14Shady Hill School
Gr: PK-8 | 530 students
Avg. class size: 16 students
Sports: 12
178 Coolidge Hill
Cambridge, MA 02138
(617) 520-5260
$75endowment
View Profile
The Park School Photo
#15The Park School
Gr: PK-8 | 568 students
Avg. class size: 14 students
Sports: 12 | Extracurriculars: 15
171 Goddard Avenue
Brookline, MA 02445
(617) 277-2456
(1)
$73endowment
View Profile
Boston College High School Photo
#16Boston College High School
Gr: 7-8 | 315 students
Avg. class size: 21 students
Sports: 19
All-boys (Catholic)
150 William T Morrissey Blvd
Dorchester, MA 02125
(617) 474-5112
$70endowment
View Profile
The Williston Northampton School Photo
#17The Williston Northampton School
Gr: 7-12 | 490 students
Avg. class size: 12 students
Sports: 23 | Extracurriculars: 24
19 Payson Avenue
Easthampton, MA 01027
(413) 529-3231
(1)
$67endowment
View Profile
The Fessenden School Photo
#18The Fessenden School
Gr: PK-9 | 550 students
Avg. class size: 12 students
Sports: 18 | Extracurriculars: 15
All-boys
250 Waltham Street
West Newton, MA 02465
(617) 630-2300
$65endowment
View Profile
Tabor Academy Photo
#19Tabor 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)
$63endowment
View Profile
Cathedral High School Photo
#20(T20–T21)Cathedral High School
Gr: 7-12 | 287 students
Sports: 9 | Extracurriculars: 9
Catholic
74 Union Park St
Boston, MA 02118
(617) 542-2325
$60endowment
View Profile
Worcester Academy Photo
#20(T20–T21)Worcester Academy
Gr: 6-12 | 502 students
Avg. class size: 14 students
Sports: 19
81 Providence Street
Worcester, MA 01604
(508) 754-5302
$60endowment
View Profile
Fay School Photo
#22Fay School
Gr: K-9
Avg. class size: 14 students
Sports: 16 | Extracurriculars: 14
48 Main Street
Southborough, MA 01772
(508) 490-8201
(9)
$59endowment
View Profile
St. John's Preparatory School Photo
#23St. John's Preparatory School
Gr: 6-12 | 1,430 students
Avg. class size: 18 students
Sports: 26 | Extracurriculars: 61
All-boys (Catholic)
72 Spring Street
Danvers, MA 01923
(978) 624-1301
(5)
$57endowment
View Profile
Lawrence Academy Photo
#24Lawrence Academy
Gr: 9-12 | 379 students
Avg. class size: 13 students
Sports: 21 | Extracurriculars: 32
26 Powderhouse Rd
Groton, MA 01450
(978) 448-1530
(1)
$50endowment
View Profile
The Rivers School Photo
#25The Rivers School
Gr: 6-12 | 519 students
Avg. class size: 12 students
Sports: 16 | Extracurriculars: 24
333 Winter St
Weston, MA 02493
(781) 235-9300
(3)
$49endowment
View Profile
Carroll School Photo
#26Carroll School
Gr: 1-9 | 447 students
Avg. class size: 7 students
Sports: 9 | Extracurriculars: 8
Special Education School
25 Baker Bridge Road
Lincoln, MA 01773
(781) 259-8342
(2)
$33endowment
View Profile
The Winchendon School Photo
#27The Winchendon School
Gr: 9-12 | 230 students
Avg. class size: 8 students
Sports: 11 | Extracurriculars: 14
172 Ash Street
Winchendon, MA 01475
(978) 297-1223
(3)
$30endowment
View Profile
Miss Hall's School Photo
#28Miss 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)
$29endowment
View Profile
Schechter Boston Photo
#29Schechter Boston
Gr: NS-8 | 446 students
Avg. class size: 15 students
Sports: 12 | Extracurriculars: 17
Jewish
60 Stein Circle
Newton Center, MA 02459
(617) 928-9100
$24endowment
View Profile
Commonwealth School Photo
#30Commonwealth 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)
$22endowment
View Profile
Falmouth Academy Photo
#31(T31–T32)Falmouth Academy
Gr: 7-12 | 180 students
Avg. class size: 12 students
Sports: 6 | Extracurriculars: 31
7 Highfield Dr.
Falmouth, MA 02540
(508) 457-9696
$20endowment
View Profile
Tenacre Country Day School Photo
#31(T31–T32)Tenacre Country Day School
Gr: PK-6 | 211 students
Avg. class size: 12 students
Sports: 7 | Extracurriculars: 8
78 Benvenue Street
Wellesley, MA 02482
(781) 235-2282
(4)
$20endowment
View Profile
Belmont Day School Photo
#33Belmont Day School
Gr: PK-8 | 339 students
Sports: 12
55 Day School Lane
Belmont, MA 02478
(617) 484-3078
(3)
$17endowment
View Profile
Derby Academy Photo
#34(T34–T35)Derby Academy
Gr: PK-8 | 346 students
Avg. class size: 15 students
Sports: 12 | Extracurriculars: 16
56 Burditt Ave
Hingham, MA 02043
(781) 749-0746
(5)
$16endowment
View Profile
Walnut Hill School For The Arts Photo
#34(T34–T35)Walnut Hill School For The Arts
Gr: 9-12 | 277 students
Sports: 2 | Extracurriculars: 6
12 Highland Street
Natick, MA 01760
(508) 650-5085
$16endowment
View Profile
Show 19 more private schools in Massachusetts (out of 54 total schools)
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Frequently Asked Questions

What is the Massachusetts average private schools endowment?
The Massachusetts average private schools endowment is $94.3M for 2026-27.
What are the private schools with the highest endowment in Massachusetts?
The top ranked private schools in Massachusetts include Phillips Academy Andover, Deerfield Academy and Groton School.
What is private high school and private elementary school with the highest endowment in Massachusetts?
The private high school with the highest endowment in Massachusetts is Phillips Academy Andover, with a value of $1326.0M. The private elementary school with the highest endowment is Groton School, with a value of $611.0M.

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