[+] Show Closed Private Schools in Middlesex County, Connecticut

Middlesex County Private Schools (Closed)

St. John School

Gr: K-8 | 114 students

Catholic

5 Saint Johns Sq

Middletown, CT 06457

(860) 347-3202

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St. Sebastian School

Gr: PK-8 | 132 students

Catholic

61 Durant Ter

Middletown, CT 06457

(860) 347-3438

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Overview

Trends in Total Number of Private Schools

Year	Middlesex County Total Schools
2025	21
2024	21
2023	20
2022	20
2021	20
2020	20
2019	20
2018	20
2017	18
2016	18
2015	23

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Private schools up 3 in Middlesex County, rising from 18 in 2016 to 21 in 2025.

# Students

2,127 Students

64,588 Students

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Showing 2016–2025. Full 11-year historical data available below ↓

Trends in the Average Number of Students Per Private School

Year	Middlesex County Average	Connecticut (CT) Average	National Average
2025	118	165	179
2024	117	161	172
2023	128	163	174
2022	139	168	185
2021	143	166	180
2020	144	163	171
2019	140	167	175
2018	146	165	172
2017	178	175	180
2016	178	172	178
2015	158	167	167

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Average school size down 60 in Middlesex County, from 178 students in 2016 to 118 in 2025.

% Average Students of Color

25%

33%

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Showing 2016–2025. Full 11-year historical data available below ↓

Percentage of Students of Color Trends (2015-2025)

Year	Middlesex County Average	Connecticut (CT) Average	National Average
2025	23%	31%	34%
2024	23%	31%	34%
2023	22%	30%	33%
2022	23%	28%	33%
2021	23%	28%	32%
2020	22%	28%	32%
2019	23%	25%	31%
2018	17%	25%	31%
2017	15%	25%	32%
2016	15%	25%	32%
2015	16%	27%	32%

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Academics and Faculty:

# Teachers

285 Teachers

7,896 Teachers

Average Student-Teacher Ratio

7:1

8:1

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Showing 2016–2025. Full 11-year historical data available below ↓

Student-Teacher Ratio Trends (2015-2025)

Year	Middlesex County Average	Connecticut (CT) Average	National Average
2025	8:1	8:1	11:1
2024	7:1	8:1	11:1
2023	7:1	8:1	11:1
2022	7:1	8:1	11:1
2021	7:1	8:1	11:1
2020	7:1	8:1	12:1
2019	7:1	8:1	12:1
2018	7:1	8:1	12:1
2017	9:1	9:1	12:1
2016	9:1	9:1	12:1
2015	9:1	9:1	12:1

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% Average Faculty w/Advanced Degree

64%

71%

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Showing 2016–2025. Full 11-year historical data available below ↓

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

Year	Middlesex County Average	Connecticut (CT) Average	National Average
2025	59%	70%	55%
2024	59%	70%	54%
2023	56%	68%	54%
2022	56%	68%	54%
2021	65%	69%	54%
2020	61%	69%	54%
2019	61%	69%	53%
2018	63%	68%	53%
2017	75%	68%	53%
2016	75%	68%	52%
2015	74%	69%	52%

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Average Class Size

12 students

14 students

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Showing 2016–2025. Full 11-year historical data available below ↓

Class Size Trends (2015-2025)

Year	Middlesex County Average	Connecticut (CT) Average	National Average
2025	11	13	15
2024	11	13	15
2023	11	13	15
2022	11	13	15
2021	11	13	15
2020	11	14	15
2019	11	14	15
2018	11	14	15
2017	11	14	15
2016	11	14	15
2015	11	13	15

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Class size steady at 11 in Middlesex County private schools from 2016 to 2025, while Connecticut fell from 14 to 13 and the U.S. stayed at 15.

Average Number of AP Courses

11 courses

18 courses

Average SAT score

1064

(Out of 1600)

1255

Tuition and Acceptance Rate:

Average Yearly Tuition Cost

$39,908

$29,268

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Tuition Cost Trends (2015-2025)

Year	Middlesex County Average	Connecticut (CT) Average	National Average
2025	$44,480	$30,563	$13,694
2024	$42,980	$30,224	$13,340
2023	$39,981	$29,155	$12,825
2018	$35,302	$25,939	$11,280
2017	$34,371	$25,257	$10,994
2016	$34,662	$24,593	$10,614
2015	$34,662	$23,402	$10,195

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Tuition up $9,818 in Middlesex County, rising from $34,662 in 2015 to $44,480 in 2025.

Average Summer Program Cost

$5,440

$4,006

Average % on Financial Aid

34%

37%

View Data

Percent on Financial Aid Trends (2020-2025)

Year	Middlesex County Average	Connecticut (CT) Average	National Average
2025	36%	36%	34%
2024	36%	37%	34%
2023	39%	36%	34%
2022	39%	35%	33%
2021	39%	35%	33%
2020	38%	35%	32%

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Financial aid now 36% in Middlesex County, matching Connecticut and sitting 2 points above the U.S. in 2025 after falling from 39% in 2023.

Average Financial Aid Grant

$9,690

$18,198

Average Acceptance Rate

83%

72%

Average Endowment Size

$3 million

$65.67 million

Students by Ethnicity:

0.51

0.63

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Diversity Score Trends

Year	Middlesex County Average	Connecticut (CT) Average	National Average
2025	0.51	0.63	0.65
2024	0.50	0.63	0.65
2023	0.47	0.62	0.65
2022	0.45	0.59	0.64
2021	0.45	0.59	0.64
2020	0.46	0.59	0.64
2019	0.40	0.56	0.63
2018	0.40	0.56	0.63
2017	0.35	0.53	0.61
2016	0.35	0.54	0.61
2015	0.38	0.54	0.61

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# American Indian Students

4 Students

716 Students

% American Indian Students

<1%

# Asian Students

87 Students

2,908 Students

% Asian Students

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Showing 2016–2025. Full 11-year historical data available below ↓

Asian Student Percentage Trends

Year	Middlesex County Average	Connecticut (CT) Average	National Average
2025	4%	5%	5%
2024	4%	5%	5%
2023	4%	5%	5%
2022	5%	5%	4%
2021	5%	5%	4%
2020	5%	5%	4%
2019	3%	5%	4%
2018	3%	5%	4%
2017	2%	4%	4%
2016	2%	4%	4%
2015	2%	4%	4%

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# Hispanic Students

174 Students

5,562 Students

% Hispanic Students

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Showing 2016–2025. Full 11-year historical data available below ↓

Hispanic Student Percentage Trends

Year	Middlesex County Average	Connecticut (CT) Average	National Average
2025	8%	9%	9%
2024	8%	9%	9%
2023	8%	8%	9%
2022	8%	7%	8%
2021	8%	7%	9%
2020	8%	8%	9%
2019	6%	6%	8%
2018	6%	6%	8%
2017	4%	5%	8%
2016	4%	6%	8%
2015	4%	6%	8%

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# Black Students

135 Students

4,891 Students

% Black Students

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Showing 2016–2025. Full 11-year historical data available below ↓

Black Student Percentage Trends

Year	Middlesex County Average	Connecticut (CT) Average	National Average
2025	6%	8%	7%
2024	6%	8%	7%
2023	6%	7%	8%
2022	6%	8%	7%
2021	6%	8%	7%
2020	6%	8%	8%
2019	6%	7%	7%
2018	6%	7%	7%
2017	4%	7%	7%
2016	4%	7%	7%
2015	5%	8%	8%

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# White Students

1,563 Students

34,906 Students

% White Students

68%

56%

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Showing 2016–2025. Full 11-year historical data available below ↓

White Student Percentage Trends

Year	Middlesex County Average	Connecticut (CT) Average	National Average
2025	68%	56%	52%
2024	69%	56%	52%
2023	72%	58%	52%
2022	73%	61%	54%
2021	73%	60%	54%
2020	73%	60%	54%
2019	77%	64%	56%
2018	77%	64%	56%
2017	80%	66%	58%
2016	80%	65%	58%
2015	78%	65%	58%

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# Hawaiian Students

3 Students

63 Students

% Hawaiian Students

<1%

# Others Students

328 Students

12,895 Students

% of Others Students

14%

21%

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Showing 2016–2025. Full 11-year historical data available below ↓

Other Races Student Percentage Trends

Year	Middlesex County Average	Connecticut (CT) Average	National Average
2025	14%	21%	26%
2024	13%	21%	26%
2023	10%	20%	25%
2022	8%	19%	25%
2021	8%	20%	25%
2020	8%	19%	24%
2019	8%	18%	24%
2018	8%	18%	23%
2017	10%	18%	22%
2016	10%	18%	22%
2015	11%	17%	21%

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All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars

9 extracurriculars

13 extracurriculars

Average Number of Sports

9 sports

10 sports

Frequently Asked Questions

What are the top ranked private schools in Middlesex County, CT?

The private schools in Middlesex County, CT include The Children's Tree Montessori School, Xavier High School, and Mercy High School.

How many private schools are located in Middlesex County?

20 private schools are located in Middlesex County.

How diverse are private schools in Middlesex County?

Middlesex County private schools are approximately 25% minority students, which is lower than the Connecticut private school average of 33%.

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

10% of all K-12 students in Middlesex County are educated in private schools (compared to the CT state average of 12%).

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

24% of private schools in Middlesex County are religiously affiliated (most commonly Catholic).

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

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