[+] Show Closed Private Schools in Suffolk County, Massachusetts

Overview

Academics and Faculty:

# Teachers

1,578 Teachers

15,704 Teachers

Average Student-Teacher Ratio

8:1

View Data

Student-Teacher Ratio Trends (2015-2025)
Year	Suffolk County Average	Massachusetts (MA) Average	National Average
2025	8:1	8:1	11:1
2024	8:1	8:1	11:1
2023	9:1	8:1	11:1
2022	9:1	8:1	11:1
2021	9:1	8:1	11:1
2020	9:1	8:1	12:1
2019	9:1	9:1	12:1
2018	9:1	9:1	12:1
2017	10:1	9:1	12:1
2016	10:1	9:1	12:1
2015	11:1	9:1	12:1

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data: Full County Dataset XML | Full County Dataset JSON

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.

% Average Faculty w/Advanced Degree

71%

67%

View Data

Percentage of Faculty With Advanced Degrees Trends (2015-2025)
Year	Suffolk County Average	Massachusetts (MA) Average	National Average
2025	72%	67%	55%
2024	72%	67%	54%
2023	71%	67%	54%
2022	71%	67%	54%
2021	71%	67%	54%
2020	68%	66%	54%
2019	68%	66%	53%
2018	69%	65%	53%
2017	69%	64%	53%
2016	68%	64%	52%
2015	67%	64%	52%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data: Full County Dataset XML | Full County Dataset JSON

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.

Average Class Size

14 students

View Data

Class Size Trends (2015-2025)
Year	Suffolk County Average	Massachusetts (MA) Average	National Average
2025	14	14	15
2024	14	14	15
2023	14	14	15
2022	14	14	15
2021	14	14	15
2020	14	14	15
2019	14	14	15
2018	14	14	15
2017	14	14	15
2016	14	14	15
2015	14	14	15

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data: Full County Dataset XML | Full County Dataset JSON

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.

Average Number of AP Courses

21 courses

16 courses

View Data

Trends in Average Number of AP Courses Offered
Year	Suffolk County Average	Massachusetts (MA) Average	National Average
2025	21	16	13
2024	15	15	12
2023	14	14	11
2022	14	15	11
2021	14	14	11
2020	13	14	11
2019	14	13	11
2018	14	13	11
2017	13	13	10
2016	13	12	10
2015	12	11	10

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data: Full County Dataset XML | Full County Dataset JSON

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.

Average SAT score

1401

(Out of 1600)

1287

View Data

SAT Score Trends (2015-2025)
Year	Suffolk County Average	Massachusetts (MA) Average	National Average
2025	1397	1289	1233
2024	1411	1291	1230
2023	1365	1272	1228
2022	1296	1266	1229
2021	1296	1263	1229
2020	1238	1254	1226
2019	1238	1238	1226
2018	1163	1235	1226
2017	1403	1277	1233
2015	1216	1102	1258

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data: Full County Dataset XML | Full County Dataset JSON

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.

Average ACT score

(Out of 36)

View Data

ACT Score Trends (2018-2025)
Year	Suffolk County Average	Massachusetts (MA) Average	National Average
2025	30	29	26
2024	30	29	26
2023	30	29	26
2022	30	29	26
2021	30	29	26
2020	30	29	25
2019	30	28	25
2018	28	28	25

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data: Full County Dataset XML | Full County Dataset JSON

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.

Tuition and Acceptance Rate:

Average Yearly Tuition Cost

$22,662

$26,745

View Data

Tuition Cost Trends (2015-2025)
Year	Suffolk County Average	Massachusetts (MA) Average	National Average
2025	$22,363	$26,485	$15,012
2024	$23,803	$27,159	$13,254
2023	$22,877	$25,129	$12,626
2022	$21,650	$24,457	$12,187
2021	$20,082	$22,623	$11,800
2020	$19,800	$21,672	$11,512
2019	$20,043	$20,983	$11,293
2018	$18,616	$20,804	$11,017
2017	$17,587	$20,615	$10,708
2016	$16,530	$20,164	$10,356
2015	$15,385	$19,785	$9,939

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data: Full County Dataset XML | Full County Dataset JSON

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.

Average Summer Program Cost

$794

$2,802

View Data

Summer Program Cost Trends (2019-2025)
Year	Suffolk County Average	Massachusetts (MA) Average	National Average
2025	$794	$2,893	$1,152
2024	$727	$2,670	$1,128
2023	$1,092	$2,623	$1,156
2022	$1,175	$2,725	$1,102
2021	$1,175	$2,818	$1,125
2020	$1,175	$2,596	$1,217
2019	$1,413	$2,279	$1,305

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data: Full County Dataset XML | Full County Dataset JSON

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.

Average % on Financial Aid

41%

36%

View Data

Percent on Financial Aid Trends (2015-2025)
Year	Suffolk County Average	Massachusetts (MA) Average	National Average
2025	41%	36%	34%
2024	41%	36%	34%
2023	46%	37%	34%
2022	44%	36%	33%
2021	46%	35%	33%
2020	49%	35%	32%
2019	49%	34%	31%
2018	49%	33%	30%
2017	44%	32%	30%
2016	44%	31%	29%
2015	50%	31%	28%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data: Full County Dataset XML | Full County Dataset JSON

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.

Average Financial Aid Grant

$25,381

$17,671

View Data

Financial Aid Grant Trends (2015-2025)
Year	Suffolk County Average	Massachusetts (MA) Average	National Average
2025	$24,059	$17,137	$7,073
2024	$24,046	$16,262	$6,930
2023	$22,666	$15,114	$6,469
2022	$17,173	$14,744	$6,289
2021	$17,064	$14,176	$6,055
2020	$17,785	$14,234	$5,921
2019	$17,535	$13,455	$5,795
2018	$15,062	$12,706	$5,456
2017	$14,065	$12,090	$5,319
2016	$13,430	$12,060	$5,105
2015	$12,391	$12,547	$5,030

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data: Full County Dataset XML | Full County Dataset JSON

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.

Average Acceptance Rate

77%

71%

View Data

Acceptance Rate Trends (2015-2025)
Year	Suffolk County Average	Massachusetts (MA) Average	National Average
2025	77%	71%	81%
2024	68%	70%	85%
2023	71%	71%	85%
2022	65%	70%	85%
2021	65%	71%	85%
2020	62%	71%	85%
2019	62%	71%	85%
2018	59%	71%	85%
2017	67%	71%	85%
2016	57%	70%	85%
2015	49%	69%	85%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data: Full County Dataset XML | Full County Dataset JSON

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.

Average Endowment Size

$46.58 million

$87.87 million

View Data

Endowment Trends (2017-2025)
Year	Suffolk County Average	Massachusetts (MA) Average	National Average
2025	$46 M	$83 M	$39 M
2024	$33 M	$105 M	$39 M
2023	$39 M	$103 M	$39 M
2022	$39 M	$100 M	$40 M
2021	$70 M	$102 M	$40 M
2020	$70 M	$104 M	$40 M
2019	$70 M	$107 M	$40 M
2018	$70 M	$127 M	$43 M
2017	$70 M	$130 M	$45 M

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data: Full County Dataset XML | Full County Dataset JSON

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.

Students by Ethnicity:

0.73

0.63

View Data

Diversity Score Trends
Year	Suffolk County Average	Massachusetts (MA) Average	National Average
2025	0.73	0.63	0.65
2024	0.73	0.63	0.65
2023	0.71	0.62	0.65
2022	0.70	0.60	0.64
2021	0.70	0.60	0.64
2020	0.71	0.59	0.64
2019	0.69	0.57	0.63
2018	0.69	0.58	0.63
2017	0.69	0.55	0.61
2016	0.69	0.55	0.61
2015	0.70	0.55	0.61

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data: Full County Dataset XML | Full County Dataset JSON

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.

# American Indian Students

11 Students

187 Students

% American Indian Students

n/a

# Asian Students

519 Students

6,792 Students

% Asian Students

View Data

Asian Student Percentage Trends
Year	Suffolk County Average	Massachusetts (MA) Average	National Average
2025	4%	6%	5%
2024	4%	6%	5%
2023	5%	6%	5%
2022	4%	7%	4%
2021	5%	6%	4%
2020	4%	7%	4%
2019	5%	6%	4%
2018	5%	5%	4%
2017	5%	6%	4%
2016	4%	5%	4%
2015	5%	5%	4%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data: Full County Dataset XML | Full County Dataset JSON

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.

# Hispanic Students

1,132 Students

7,577 Students

% Hispanic Students

View Data

Hispanic Student Percentage Trends
Year	Suffolk County Average	Massachusetts (MA) Average	National Average
2025	9%	6%	9%
2024	9%	6%	9%
2023	9%	6%	9%
2022	9%	5%	8%
2021	10%	5%	9%
2020	10%	5%	9%
2019	9%	5%	8%
2018	9%	5%	8%
2017	8%	4%	8%
2016	8%	4%	8%
2015	8%	5%	8%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data: Full County Dataset XML | Full County Dataset JSON

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.

# Black Students

2,686 Students

8,696 Students

% Black Students

22%

View Data

Black Student Percentage Trends
Year	Suffolk County Average	Massachusetts (MA) Average	National Average
2025	22%	7%	7%
2024	22%	7%	7%
2023	19%	7%	8%
2022	14%	6%	7%
2021	13%	6%	7%
2020	15%	6%	8%
2019	13%	6%	7%
2018	13%	6%	7%
2017	15%	6%	7%
2016	16%	6%	7%
2015	17%	7%	8%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data: Full County Dataset XML | Full County Dataset JSON

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.

# White Students

4,747 Students

67,960 Students

% White Students

39%

55%

View Data

White Student Percentage Trends
Year	Suffolk County Average	Massachusetts (MA) Average	National Average
2025	38%	54%	52%
2024	38%	54%	52%
2023	45%	56%	52%
2022	45%	58%	54%
2021	44%	59%	54%
2020	43%	59%	54%
2019	46%	61%	56%
2018	45%	61%	56%
2017	46%	63%	58%
2016	46%	64%	58%
2015	45%	64%	58%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data: Full County Dataset XML | Full County Dataset JSON

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.

# Hawaiian Students

12 Students

83 Students

% Hawaiian Students

n/a

# Two or more races Students

n/a

% of Two or more races Students

n/a

# Others Students

3,262 Students

33,225 Students

% of Others Students

26%

27%

View Data

Other Races Student Percentage Trends
Year	Suffolk County Average	Massachusetts (MA) Average	National Average
2025	27%	27%	26%
2024	27%	27%	26%
2023	22%	25%	25%
2022	28%	24%	25%
2021	28%	24%	25%
2020	28%	23%	24%
2019	27%	22%	24%
2018	28%	23%	23%
2017	26%	21%	22%
2016	26%	21%	22%
2015	25%	19%	21%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data: Full County Dataset XML | Full County Dataset JSON

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.

All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars

13 extracurriculars

Average Number of Sports

8 sports

9 sports

Frequently Asked Questions

What are the top ranked private schools in Suffolk County, MA?

The private schools in Suffolk County, MA include The Roxbury Latin School, Boston College High School, and Catholic Memorial.

How many private schools are located in Suffolk County?

74 private schools are located in Suffolk County.

How much do private schools cost in Suffolk County?

The average tuition cost is $22,662, which is lower than the Massachusetts private school average tuition cost of $26,745.

How diverse are private schools in Suffolk County?

Suffolk County private schools are approximately 53% minority students, which is higher than the Massachusetts private school average of 31%.

What percentage of students in Suffolk County go to private school?

14% of all K-12 students in Suffolk County are educated in private schools (compared to the MA state average of 12%).

What percentage of private schools are religiously affiliated in Suffolk County?

47% of private schools in Suffolk County are religiously affiliated (most commonly Catholic and Jewish).

Which private schools in Suffolk County are often viewed compared to one another?

Popular comparisons of private schools in Suffolk County include: School Street KinderCare vs. Mercantile KinderCare, Mercantile KinderCare vs. School Street KinderCare, Holy Name Parish School vs. St. Theresa School

Recent Articles

September 01, 2026

How Much Homework Is Too Much?

Learn how to compare private school homework expectations, recognize excessive workloads, evaluate assignment quality, and ask better questions about academic balance before choosing a school for your child.

September 01, 2026

Learning Support Without a Formal Program

Learn what private schools mean by informal learning support, how services differ from formal programs, and which questions families should ask before choosing the right school today.

September 01, 2026

Beyond AP vs. IB: How to Judge Academic Rigor

Learn how to judge academic rigor at private schools without AP or IB by examining curriculum depth, assessments, faculty expectations, advanced coursework, student work, and college preparation outcomes.

Quick Links

SCHOOL SEARCH TOOLS:

SCHOOL BY TYPE (MA):

OPEN-HOUSES & JOBS:

PUBLIC & BOARDING SCHOOLS:

PRIVATE SCHOOL DATA:

Most Popular Articles

Costs of Private School in 2026

Massachusetts Private Schools By Tuition Cost

Free Schools

Funding the Future
Leadership in Private Education
Global Educator Empowerment
Programs for Exceptional Learners
Expert School Views

Quick Facts (2026-27)

Quick Facts (2026-27)

Top Ranked Suffolk County Private Schools (2026-27)

Suffolk County Private Schools (Closed)

Overview

Trends in Total Number of Private Schools

Trends in the Average Number of Students Per Private School

Percentage of Students of Color Trends (2015-2025)

Academics and Faculty:

Student-Teacher Ratio Trends (2015-2025)

Percentage of Faculty With Advanced Degrees Trends (2015-2025)

Class Size Trends (2015-2025)

Trends in Average Number of AP Courses Offered

SAT Score Trends (2015-2025)

ACT Score Trends (2018-2025)

Tuition and Acceptance Rate:

Tuition Cost Trends (2015-2025)

Summer Program Cost Trends (2019-2025)

Percent on Financial Aid Trends (2015-2025)

Financial Aid Grant Trends (2015-2025)

Acceptance Rate Trends (2015-2025)

Endowment Trends (2017-2025)

Students by Ethnicity:

Diversity Score Trends

Asian Student Percentage Trends

Hispanic Student Percentage Trends

Black Student Percentage Trends

White Student Percentage Trends

Other Races Student Percentage Trends

Extracurriculars and Sports:

Frequently Asked Questions

Recent Articles

Filter Schools

Quick Links

Most Popular Articles

More Articles

Trends in the Average Number of Students Per Private School
Year	Suffolk County Average	Massachusetts (MA) Average	National Average
2025	173	159	179
2024	170	156	172
2023	181	159	174
2022	175	162	185
2021	172	159	180
2020	169	155	171
2019	175	157	175
2018	177	157	172
2017	175	160	180
2016	174	159	178
2015	171	152	167

Best Suffolk County Private Schools (2026-27)

Top Ranked Suffolk County Private Schools (2026-27)

Suffolk County Private Schools (Closed)

Overview

Trends in Total Number of Private Schools

Trends in the Average Number of Students Per Private School

Percentage of Students of Color Trends (2015-2025)

Academics and Faculty:

Student-Teacher Ratio Trends (2015-2025)

Percentage of Faculty With Advanced Degrees Trends (2015-2025)

Class Size Trends (2015-2025)

Trends in Average Number of AP Courses Offered

SAT Score Trends (2015-2025)

ACT Score Trends (2018-2025)

Tuition and Acceptance Rate:

Tuition Cost Trends (2015-2025)

Summer Program Cost Trends (2019-2025)

Percent on Financial Aid Trends (2015-2025)

Financial Aid Grant Trends (2015-2025)

Acceptance Rate Trends (2015-2025)

Endowment Trends (2017-2025)

Students by Ethnicity:

Diversity Score Trends

Asian Student Percentage Trends

Hispanic Student Percentage Trends

Black Student Percentage Trends

White Student Percentage Trends

Other Races Student Percentage Trends

Extracurriculars and Sports:

Frequently Asked Questions

More Articles