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Best New Haven County Private High Schools (2026)

[+] Show Closed Private Schools in New Haven County, Connecticut

New Haven County Private Schools (Closed)

School

Location

Quick Facts

Boulder Knoll Montessori School (Closed 2019)

Montessori School

660 Boulder Rd.
Cheshire, CT 06410
(203) 272-5893

Gr: PK-K | 20 students Avg. class size: 20 students

Lorraine D Foster Day School (Closed 2013)

Special Education School

1861 Whitney Ave
Hamden, CT 06517
(203) 230-4877

Gr: 6-12 | 15 students

Montessori School Of Madison (Closed 2017)

Montessori School

213 Green Hill Road
Madison, CT 06443
(203) 245-1635

Gr: NS-K | 21 students Avg. class size: 15 students Acceptance rate listed

Our Lady Of Mount Carmel (Closed 2025)

(Catholic)

115 Lewis Ave
Meriden, CT 06451
(213) 235-2959

Gr: PK-8 | 171 students

Our Lady Of Victory School (Closed 2015)

Alternative School (Catholic)

620 Jones Hill Rd
West Haven, CT 06516
(203) 932-6457

Gr: PK-8 | 113 students

Oxford KinderCare (Closed 2025)

Daycare / Preschool

35 Old State Rd. 67
Oxford, CT 06478
(203) 888-0479

Gr: NS-PK

St. Ann School (Closed 2010)

(Catholic)

64 Ridge St
Milford, CT 06460
(203) 878-2738

Gr: K-9 | 102 students

St. Bernadette School (Closed 2013)

(Catholic)

20 Burr St
East Haven, CT 06512
(203) 469-2271

Gr: PK-8 | 117 students

St. Francis Xavier School (Closed 2010)

(Catholic)

605 Baldwin St
Waterbury, CT 06706
(203) 756-7804

Gr: NS-9 | 109 students

St. Hedwig School (Closed 2010)

(Catholic)

32 Golden Hill St
Naugatuck, CT 06770
(203) 729-2403

Gr: NS-9 | 162 students

St. Joseph School (Closed 2004)

(Catholic)

36 Jewett St
Ansonia, CT 06401
(203) 734-3821

Gr: PK-8 | 141 students

St. Lucy School (Closed 2004)

(Catholic)

58 Griggs St
Waterbury, CT 06704
(203) 756-3831

Gr: K-8 | 156 students

St. Margaret School (Closed 2006)

(Catholic)

289 Willow Street
Waterbury, CT 06710
(203) 753-3708

Gr: PK-8 | 196 students

St. Mary School (Closed 2006)

(Catholic)

97 Grove Street
Meriden, CT 06451
(203) 237-2931

Gr: K-8 | 92 students

St. St.anislaus School (Closed 2010)

(Catholic)

81 Akron St
Meriden, CT 06450
(203) 237-1005

Gr: K-8 | 163 students Avg. class size: 18 students Tuition listed

Shoreline School Of Montessori (Closed 2015)

Montessori School

675 E Main St1
Branford, CT 06405
(203) 481-5888

Gr: PK-K | 38 students Avg. class size: 30 students

Stepping Stones School (Closed 2012)

All-girls | Special Education School

63 Prospect Street
Waterbury, CT 06702
(203) 596-1177

Gr: 8-11 | 22 students

Yeshiva Of New Haven (Closed 2015)

(Jewish)

765 Elm Street
New Haven, CT 06511
(202) 777-2200

Gr: NS-12 | 117 students

Overview

This County (New Haven County)

This State (CT)

# Schools

46 Schools

View Data

Trends in Total Number of Private High Schools
Year	New Haven County Total Schools
2025	46
2024	49
2023	42
2022	37
2021	41
2020	41
2019	38
2018	41
2017	36
2016	36
2015	39

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Student Body:

# Students

6,979 Students

36,258 Students

View Data

Trends in the Average Number of Students Per Private High School
Year	New Haven County Average	Connecticut (CT) Average	National Average
2025	155	207	253
2024	148	203	245
2023	170	217	247
2022	189	225	257
2021	196	223	249
2020	195	216	235
2019	212	226	242
2018	203	223	238
2017	246	249	246
2016	241	244	241
2015	223	234	220

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% Average Students of Color

39%

30%

View Data

Percentage of Students of Color Trends (2015-2025)
Year	New Haven County Average	Connecticut (CT) Average	National Average
2025	39%	30%	32%
2024	38%	29%	31%
2023	37%	31%	31%
2022	38%	28%	30%
2021	35%	27%	30%
2020	32%	26%	29%
2019	26%	25%	29%
2018	25%	24%	28%
2017	27%	25%	30%
2016	25%	25%	30%
2015	32%	27%	30%

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Academics and Faculty:

# Teachers

1,030 Teachers

5,444 Teachers

Average Student-Teacher Ratio

7:1

View Data

Student-Teacher Ratio Trends (2015-2025)
Year	New Haven County Average	Connecticut (CT) Average	National Average
2025	7:1	7:1	10:1
2024	7:1	7:1	10:1
2023	7:1	7:1	10:1
2022	7:1	7:1	10:1
2021	7:1	7:1	10:1
2020	7:1	7:1	10:1
2019	8:1	7:1	10:1
2018	8:1	7:1	10:1
2017	8:1	7:1	10:1
2016	8:1	7:1	10:1
2015	8:1	7:1	10:1

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% Average Faculty w/Advanced Degree

70%

73%

View Data

Percentage of Faculty With Advanced Degrees Trends (2015-2025)
Year	New Haven County Average	Connecticut (CT) Average	National Average
2025	70%	73%	57%
2024	70%	73%	57%
2023	67%	70%	57%
2022	67%	70%	56%
2021	67%	70%	56%
2020	70%	71%	56%
2019	70%	71%	55%
2018	75%	70%	55%
2017	73%	70%	55%
2016	71%	68%	54%
2015	69%	69%	54%

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Average Class Size

13 students

12 students

View Data

Class Size Trends (2015-2025)
Year	New Haven County Average	Connecticut (CT) Average	National Average
2025	13	12	14
2024	12	11	14
2023	13	12	14
2022	13	11	14
2021	13	12	14
2020	12	12	14
2019	13	12	14
2018	13	12	14
2017	14	12	14
2016	14	12	14
2015	14	12	14

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Average Number of AP Courses

20 courses

17 courses

View Data

Trends in Average Number of AP Courses Offered
Year	New Haven County Average	Connecticut (CT) Average	National Average
2025	20	17	13
2024	15	15	12
2023	15	16	12
2022	14	15	12
2021	14	15	12
2020	15	16	12
2019	16	16	11
2018	14	15	11
2017	14	15	11
2016	14	14	11
2015	15	15	10

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Average SAT score

1347

(Out of 1600)

1247

View Data

SAT Score Trends (2016-2025)
Year	New Haven County Average	Connecticut (CT) Average	National Average
2025	1,347	1,247	1,233
2024	1,360	1,254	1,231
2023	1,342	1,244	1,229
2022	1,342	1,242	1,230
2021	1,354	1,240	1,230
2020	1,330	1,239	1,227
2019	1,338	1,241	1,226
2018	1,362	1,257	1,226
2017	1,348	1,266	1,233
2016	1,112	1,292	1,308

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Average ACT score

(Out of 36)

View Data

ACT Score Trends (2015-2025)
Year	New Haven County Average	Connecticut (CT) Average	National Average
2025	30	28	26
2024	30	28	26
2023	30	28	26
2022	30	27	26
2021	29	27	26
2020	29	27	26
2019	29	27	25
2018	28	27	25
2017	28	27	25
2016	28	26	25
2015	29	26	25

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Tuition and Acceptance Rate:

Average Yearly Tuition Cost

$29,229

$39,344

View Data

Tuition Cost Trends (2015-2025)
Year	New Haven County Average	Connecticut (CT) Average	National Average
2025	$29,229	$39,344	$17,997
2024	$33,612	$42,671	$17,011
2023	$33,269	$41,805	$16,191
2022	$35,832	$41,667	$15,821
2021	$32,001	$38,105	$15,331
2020	$31,588	$36,435	$15,046
2019	$31,318	$34,271	$14,791
2018	$27,542	$32,918	$14,527
2017	$23,010	$32,409	$14,161
2016	$22,772	$32,257	$13,713
2015	$21,194	$29,365	$13,065

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Average % on Financial Aid

41%

38%

View Data

Percent on Financial Aid Trends (2015-2025)
Year	New Haven County Average	Connecticut (CT) Average	National Average
2025	41%	38%	38%
2024	41%	38%	37%
2023	39%	37%	36%
2022	36%	36%	36%
2021	42%	37%	36%
2020	41%	36%	35%
2019	39%	35%	34%
2018	39%	34%	33%
2017	37%	33%	32%
2016	39%	31%	31%
2015	38%	31%	30%

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Average Financial Aid Grant

$27,301

$24,420

View Data

Financial Aid Grant Trends (2015-2025)
Year	New Haven County Average	Connecticut (CT) Average	National Average
2025	$27,301	$24,476	$9,714
2024	$26,938	$23,407	$9,498
2023	$25,068	$24,437	$8,890
2022	$33,217	$23,789	$8,717
2021	$22,618	$23,298	$8,472
2020	$22,743	$22,726	$8,370
2019	$22,743	$22,586	$7,924
2018	$23,038	$21,094	$7,471
2017	$22,163	$20,220	$7,202
2016	$23,233	$19,252	$6,993
2015	$23,985	$18,669	$6,822

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Average Acceptance Rate

61%

65%

View Data

Acceptance Rate Trends (2015-2025)
Year	New Haven County Average	Connecticut (CT) Average	National Average
2025	61%	65%	79%
2024	67%	61%	81%
2023	60%	57%	81%
2022	58%	58%	81%
2021	60%	58%	81%
2020	44%	58%	81%
2019	41%	58%	81%
2018	38%	59%	80%
2017	47%	61%	81%
2016	45%	58%	80%
2015	47%	58%	81%

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Average Endowment Size

$65.1 million

$68.2 million

View Data

Endowment Trends (2017-2025)
Year	New Haven County Average	Connecticut (CT) Average	National Average
2025	$65 M	$68 M	$65 M
2024	$65 M	$73 M	$65 M
2023	$66 M	$74 M	$65 M
2022	$66 M	$76 M	$67 M
2021	$65 M	$77 M	$75 M
2020	$65 M	$73 M	$76 M
2019	$64 M	$77 M	$61 M
2018	$36 M	$87 M	$55 M
2017	$10 M	$90 M	$57 M

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Students by Ethnicity:

0.60

0.56

View Data

Diversity Score Trends
Year	New Haven County Average	Connecticut (CT) Average	National Average
2025	0.60	0.57	0.61
2024	0.59	0.56	0.60
2023	0.59	0.55	0.60
2022	0.54	0.51	0.58
2021	0.55	0.51	0.57
2020	0.54	0.51	0.57
2019	0.50	0.48	0.56
2018	0.47	0.48	0.55
2017	0.43	0.46	0.54
2016	0.43	0.47	0.54
2015	0.43	0.46	0.53

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# American Indian Students

15 Students

645 Students

% American Indian Students

n/a

# Asian Students

519 Students

2,248 Students

% Asian Students

View Data

Asian Student Percentage Trends
Year	New Haven County Average	Connecticut (CT) Average	National Average
2025	7%	6%	5%
2024	7%	6%	6%
2023	8%	7%	6%
2022	9%	6%	5%
2021	8%	7%	5%
2020	8%	7%	5%
2019	8%	6%	5%
2018	8%	7%	5%
2017	5%	5%	4%
2016	5%	5%	4%
2015	5%	5%	4%

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# Hispanic Students

811 Students

2,914 Students

% Hispanic Students

11%

View Data

Hispanic Student Percentage Trends
Year	New Haven County Average	Connecticut (CT) Average	National Average
2025	11%	8%	9%
2024	11%	8%	9%
2023	10%	8%	8%
2022	7%	7%	8%
2021	8%	7%	8%
2020	8%	8%	8%
2019	6%	6%	8%
2018	6%	6%	8%
2017	5%	6%	7%
2016	5%	6%	8%
2015	5%	6%	8%

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# Black Students

829 Students

2,975 Students

% Black Students

11%

View Data

Black Student Percentage Trends
Year	New Haven County Average	Connecticut (CT) Average	National Average
2025	11%	9%	8%
2024	11%	9%	8%
2023	11%	8%	8%
2022	9%	8%	8%
2021	9%	8%	8%
2020	9%	8%	8%
2019	8%	8%	8%
2018	8%	8%	8%
2017	7%	8%	8%
2016	7%	8%	8%
2015	8%	8%	9%

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# White Students

4,559 Students

22,237 Students

% White Students

61%

64%

View Data

White Student Percentage Trends
Year	New Haven County Average	Connecticut (CT) Average	National Average
2025	61%	64%	59%
2024	62%	64%	60%
2023	62%	65%	60%
2022	66%	69%	62%
2021	65%	68%	63%
2020	66%	68%	64%
2019	69%	71%	64%
2018	71%	71%	65%
2017	75%	73%	66%
2016	75%	72%	66%
2015	75%	72%	66%

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# Hawaiian Students

10 Students

29 Students

% Hawaiian Students

n/a

# Two or more races Students

n/a

% of Two or more races Students

n/a

# Others Students

765 Students

3,650 Students

% of Others Students

10%

11%

View Data

Other Races Student Percentage Trends
Year	New Haven County Average	Connecticut (CT) Average	National Average
2025	10%	11%	17%
2024	9%	11%	15%
2023	9%	10%	16%
2022	9%	10%	16%
2021	10%	10%	15%
2020	9%	9%	14%
2019	9%	9%	14%
2018	7%	8%	13%
2017	8%	8%	14%
2016	8%	9%	13%
2015	7%	9%	12%

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All Ethnic Groups