[+] Show Closed Private Schools in St. Tammany Parish, Louisiana

St. Tammany Parish Private Schools (Closed)

New Directions Alternative School

Gr: 8-12 | 10 students

All-boys | Alternative School

201 Greenbriar Blvd

Covington, LA 70433

(985) 893-2970

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Northminster Montessori Preschool & Kindergarten

Gr: PK-K | 12 students

Montessori School (Presbyterian)

63140 Highway 1090

Pearl River, LA 70452

(985) 863-0800

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Slidell Christian Academy

Gr: PK-8

59334 N Pearl Dr

Slidell, LA 70461

(985) 641-3785

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Slidell SDA School

Gr: 2-7 | 3 students

Seventh Day Adventist

Po Box 753

Slidell, LA 70459

(985) 641-5792

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Overview

Academics and Faculty:

# Teachers

785 Teachers

9,828 Teachers

Average Student-Teacher Ratio

13:1

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

Student-Teacher Ratio Trends (2015-2025)
Year	St. Tammany Parish Average	Louisiana (LA) Average	National Average
2025	13:1	13:1	11:1
2024	13:1	13:1	11:1
2023	13:1	12:1	11:1
2022	13:1	13:1	11:1
2021	13:1	13:1	11:1
2020	13:1	13:1	12:1
2019	14:1	13:1	12:1
2018	14:1	13:1	12:1
2017	14:1	14:1	12:1
2016	14:1	14:1	12:1
2015	15:1	14:1	12:1

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% Average Faculty w/Advanced Degree

52%

41%

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Percentage of Faculty With Advanced Degrees Trends (2017-2025)
Year	St. Tammany Parish Average	Louisiana (LA) Average	National Average
2025	52%	40%	55%
2024	50%	40%	54%
2023	54%	39%	54%
2022	54%	39%	54%
2021	54%	39%	54%
2020	54%	39%	54%
2019	56%	39%	53%
2018	60%	39%	53%
2017	60%	39%	53%

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Average Class Size

18 students

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

Class Size Trends (2015-2025)
Year	St. Tammany Parish Average	Louisiana (LA) Average	National Average
2025	18	17	15
2024	18	17	15
2023	17	17	15
2022	17	17	15
2021	17	17	15
2020	19	17	15
2019	19	17	15
2018	19	18	15
2017	19	17	15
2016	19	18	15
2015	20	18	15

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Average Number of AP Courses

15 courses

10 courses

Average ACT score

(Out of 36)

Tuition and Acceptance Rate:

Average Yearly Tuition Cost

$8,969

$8,370

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

Tuition Cost Trends (2015-2025)
Year	St. Tammany Parish Average	Louisiana (LA) Average	National Average
2025	$8,938	$9,739	$15,012
2024	$8,706	$9,617	$14,622
2023	$8,749	$9,243	$14,057
2022	$7,872	$9,064	$13,504
2021	$7,709	$8,999	$13,232
2020	$7,558	$8,762	$12,915
2019	$7,518	$8,666	$12,656
2018	$7,283	$8,424	$12,363
2017	$7,249	$8,292	$12,049
2016	$6,730	$8,115	$11,633
2015	$6,635	$7,912	$11,174

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Average Summer Program Cost

$550

$344

Average % on Financial Aid

33%

23%

Average Financial Aid Grant

$2,000

$2,025

Average Acceptance Rate

91%

89%

Students by Ethnicity:

0.48

0.55

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

Diversity Score Trends
Year	St. Tammany Parish Average	Louisiana (LA) Average	National Average
2025	0.48	0.55	0.65
2024	0.50	0.55	0.65
2023	0.50	0.54	0.65
2022	0.44	0.51	0.64
2021	0.43	0.52	0.64
2020	0.43	0.52	0.64
2019	0.43	0.52	0.63
2018	0.43	0.52	0.63
2017	0.38	0.48	0.61
2016	0.36	0.48	0.61
2015	0.36	0.48	0.61

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# American Indian Students

21 Students

466 Students

% American Indian Students

<1%

# Asian Students

172 Students

3,141 Students

% Asian Students

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

Asian Student Percentage Trends
Year	St. Tammany Parish Average	Louisiana (LA) Average	National Average
2025	2%	4%	5%
2024	2%	4%	5%
2023	1%	3%	5%
2022	1%	3%	4%
2021	1%	2%	4%
2020	2%	2%	4%
2019	1%	3%	4%
2018	1%	3%	4%
2017	1%	3%	4%
2016	1%	2%	4%
2015	1%	2%	4%

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# Hispanic Students

203 Students

4,025 Students

% Hispanic Students

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

Hispanic Student Percentage Trends
Year	St. Tammany Parish Average	Louisiana (LA) Average	National Average
2025	2%	3%	9%
2024	2%	3%	9%
2023	2%	3%	9%
2022	2%	3%	8%
2021	2%	3%	9%
2020	2%	3%	9%
2019	2%	3%	8%
2018	2%	3%	8%
2017	1%	2%	8%
2016	1%	2%	8%
2015	1%	2%	8%

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# Black Students

272 Students

13,988 Students

% Black Students

11%

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

Black Student Percentage Trends
Year	St. Tammany Parish Average	Louisiana (LA) Average	National Average
2025	3%	11%	7%
2024	3%	12%	7%
2023	3%	13%	8%
2022	3%	12%	7%
2021	3%	12%	7%
2020	3%	12%	8%
2019	3%	12%	7%
2018	3%	13%	7%
2017	3%	11%	7%
2016	3%	12%	7%
2015	3%	12%	8%

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# White Students

6,567 Students

79,143 Students

% White Students

68%

64%

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

White Student Percentage Trends
Year	St. Tammany Parish Average	Louisiana (LA) Average	National Average
2025	68%	64%	52%
2024	65%	63%	52%
2023	65%	64%	52%
2022	72%	67%	54%
2021	73%	67%	54%
2020	73%	67%	54%
2019	73%	67%	56%
2018	73%	67%	56%
2017	77%	70%	58%
2016	78%	70%	58%
2015	78%	70%	58%

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# Hawaiian Students

2 Students

182 Students

% Hawaiian Students

<1%

# Others Students

2,436 Students

22,485 Students

% of Others Students

25%

18%

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

Other Races Student Percentage Trends
Year	St. Tammany Parish Average	Louisiana (LA) Average	National Average
2025	25%	18%	26%
2024	28%	18%	26%
2023	29%	17%	25%
2022	22%	15%	25%
2021	21%	16%	25%
2020	20%	16%	24%
2019	21%	15%	24%
2018	21%	14%	23%
2017	18%	14%	22%
2016	17%	14%	22%
2015	17%	14%	21%

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All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars

11 extracurriculars

10 extracurriculars

Average Number of Sports

11 sports

9 sports

Frequently Asked Questions

What are the top ranked private schools in St. Tammany Parish, LA?

The private schools in St. Tammany Parish, LA include Our Lady of the Lake Roman Catholic School, Northlake Christian School, and St. Pauls High School.

How many private schools are located in St. Tammany Parish?

26 private schools are located in St. Tammany Parish.

How much do private schools cost in St. Tammany Parish?

The average tuition cost is $8,969, which is higher than the Louisiana private school average tuition cost of $8,370.

How diverse are private schools in St. Tammany Parish?

St. Tammany Parish private schools are approximately 12% minority students, which is lower than the Louisiana private school average of 22%.

What percentage of students in St. Tammany Parish go to private school?

20% of all K-12 students in St. Tammany Parish are educated in private schools (compared to the LA state average of 16%).

What percentage of private schools are religiously affiliated in St. Tammany Parish?

67% of private schools in St. Tammany Parish are religiously affiliated (most commonly Catholic and Baptist).

Which private schools in St. Tammany Parish are often viewed compared to one another?

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