[+] Show Closed Private Schools in Ada County, Idaho

Ada County Private Schools (Closed)

Five Mile Montessori

Gr: PK-K | 14 students

Montessori School

1439 S Weideman Ave

Boise, ID 83709

(208) 322-8981

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Maranatha Christian School

Gr: K-6 | 66 students

Assembly of God

12000 W Fairview Ave

Boise, ID 83713

(208) 376-7272

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Vineyard Christian Academy

Gr: PK-8 | 108 students

Specialized Curriculum (Christian)

4950 N Bradley St

Garden City, ID 83714

(208) 562-4551

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Overview

Academics and Faculty:

# Teachers

681 Teachers

1,686 Teachers

Average Student-Teacher Ratio

12:1

13:1

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Student-Teacher Ratio Trends (2015-2025)
Year	Ada County Average	Idaho (ID) Average	National Average
2025	12:1	13:1	11:1
2024	12:1	13:1	11:1
2023	12:1	13:1	11:1
2022	14:1	13:1	11:1
2021	14:1	13:1	11:1
2020	14:1	13:1	12:1
2019	14:1	12:1	12:1
2018	13:1	13:1	12:1
2017	14:1	13:1	12:1
2016	14:1	13:1	12:1
2015	14:1	13:1	12:1

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% Average Faculty w/Advanced Degree

66%

57%

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Percentage of Faculty With Advanced Degrees Trends (2015-2025)
Year	Ada County Average	Idaho (ID) Average	National Average
2025	66%	57%	55%
2024	57%	54%	54%
2023	54%	51%	54%
2022	54%	50%	54%
2021	61%	51%	54%
2020	44%	45%	54%
2019	40%	45%	53%
2018	47%	46%	53%
2017	47%	45%	53%
2016	49%	48%	52%
2015	55%	48%	52%

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Average Class Size

17 students

15 students

View Data

Class Size Trends (2015-2025)
Year	Ada County Average	Idaho (ID) Average	National Average
2025	17	15	15
2024	17	15	15
2023	17	14	15
2022	16	14	15
2021	17	14	15
2020	16	14	15
2019	16	14	15
2018	16	14	15
2017	15	13	15
2016	15	13	15
2015	15	12	15

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Average Number of AP Courses

17 courses

10 courses

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Trends in Average Number of AP Courses Offered
Year	Ada County Average	Idaho (ID) Average	National Average
2025	17	10	13
2024	17	9	12
2023	17	10	11
2022	17	10	11
2021	17	10	11
2020	17	10	11
2019	12	8	11
2018	9	7	11
2017	9	7	10
2016	4	5	10
2015	6	6	10

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Average SAT score

1249

(Out of 1600)

1243

View Data

SAT Score Trends (2015-2025)
Year	Ada County Average	Idaho (ID) Average	National Average
2025	1249	1243	1233
2024	1248	1237	1230
2023	1248	1237	1228
2022	1229	1230	1229
2021	1229	1230	1229
2020	1268	1249	1226
2019	1325	1265	1226
2018	1205	1237	1226
2017	1205	1267	1233
2016	1342	1342	1306
2015	1342	1342	1258

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Average ACT score

(Out of 36)

View Data

ACT Score Trends (2017-2025)
Year	Ada County Average	Idaho (ID) Average	National Average
2025	27	27	26
2024	27	27	26
2023	27	27	26
2022	26	27	26
2021	26	27	26
2020	27	27	25
2019	27	27	25
2018	29	28	25
2017	29	31	25

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Tuition and Acceptance Rate:

Average Yearly Tuition Cost

$15,321

$11,079

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Tuition Cost Trends (2015-2025)
Year	Ada County Average	Idaho (ID) Average	National Average
2025	$15,522	$11,533	$15,012
2024	$8,388	$8,818	$13,254
2023	$8,050	$8,697	$12,626
2022	$7,765	$8,375	$12,187
2021	$7,399	$8,233	$11,800
2020	$7,066	$8,323	$11,512
2019	$7,066	$8,501	$11,293
2018	$6,226	$6,089	$11,017
2017	$6,045	$6,045	$10,708
2016	$5,312	$5,497	$10,356
2015	$5,734	$5,467	$9,939

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Average % on Financial Aid

17%

19%

View Data

Percent on Financial Aid Trends (2015-2025)
Year	Ada County Average	Idaho (ID) Average	National Average
2025	16%	19%	34%
2024	18%	20%	34%
2023	22%	21%	34%
2022	22%	22%	33%
2021	22%	22%	33%
2020	21%	21%	32%
2019	20%	21%	31%
2018	20%	20%	30%
2017	20%	22%	30%
2016	17%	25%	29%
2015	17%	25%	28%

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Average Financial Aid Grant

$5,171

$3,626

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Financial Aid Grant Trends (2015-2025)
Year	Ada County Average	Idaho (ID) Average	National Average
2025	$5,171	$3,626	$7,073
2024	$5,600	$2,308	$6,930
2023	$2,600	$1,708	$6,469
2022	$2,600	$1,708	$6,289
2021	$4,000	$1,734	$6,055
2020	$4,000	$1,625	$5,921
2019	$4,000	$1,625	$5,795
2018	$4,000	$1,609	$5,456
2017	$4,000	$1,629	$5,319
2016	$2,500	$1,355	$5,105
2015	$2,500	$1,069	$5,030

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Average Acceptance Rate

82%

87%

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Acceptance Rate Trends (2015-2025)
Year	Ada County Average	Idaho (ID) Average	National Average
2025	82%	87%	81%
2024	88%	89%	85%
2023	87%	89%	85%
2022	86%	90%	85%
2021	86%	91%	85%
2020	87%	91%	85%
2019	86%	91%	85%
2018	88%	90%	85%
2017	87%	90%	85%
2016	87%	90%	85%
2015	89%	90%	85%

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Average Endowment Size

$66 million

$45.97 million

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Endowment Trends (2017-2025)
Year	Ada County Average	Idaho (ID) Average	National Average
2025	$62 M	$46 M	$60 M
2024	$7 M	$5 M	$59 M
2023	$7 M	$5 M	$71 M
2022	$7 M	$5 M	$76 M
2021	$7 M	$5 M	$71 M
2020	$7 M	$5 M	$74 M
2019	$10 M	$6 M	$78 M
2018	$9 M	$9 M	$67 M
2017	$9 M	$9 M	$83 M

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Students by Ethnicity:

0.54

0.55

View Data

Diversity Score Trends
Year	Ada County Average	Idaho (ID) Average	National Average
2025	0.54	0.55	0.65
2024	0.55	0.55	0.65
2023	0.56	0.56	0.65
2022	0.55	0.55	0.64
2021	0.55	0.55	0.64
2020	0.51	0.52	0.64
2019	0.52	0.52	0.63
2018	0.51	0.52	0.63
2017	0.51	0.51	0.61
2016	0.50	0.50	0.61
2015	0.50	0.51	0.61

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# American Indian Students

21 Students

92 Students

% American Indian Students

n/a

# Asian Students

195 Students

459 Students

% Asian Students

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Asian Student Percentage Trends
Year	Ada County Average	Idaho (ID) Average	National Average
2025	3%	2%	5%
2024	4%	2%	5%
2023	5%	3%	5%
2022	3%	3%	4%
2021	3%	2%	4%
2020	3%	3%	4%
2019	4%	3%	4%
2018	4%	3%	4%
2017	3%	2%	4%
2016	3%	2%	4%
2015	4%	2%	4%

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# Hispanic Students

403 Students

1,063 Students

% Hispanic Students

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Hispanic Student Percentage Trends
Year	Ada County Average	Idaho (ID) Average	National Average
2025	5%	5%	9%
2024	5%	5%	9%
2023	3%	4%	9%
2022	3%	4%	8%
2021	3%	4%	9%
2020	3%	4%	9%
2019	4%	5%	8%
2018	4%	5%	8%
2017	4%	4%	8%
2016	3%	4%	8%
2015	3%	4%	8%

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# Black Students

109 Students

383 Students

% Black Students

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Black Student Percentage Trends
Year	Ada County Average	Idaho (ID) Average	National Average
2025	1%	2%	7%
2024	1%	2%	7%
2023	1%	2%	8%
2022	2%	1%	7%
2021	2%	1%	7%
2020	2%	2%	8%
2019	2%	2%	7%
2018	2%	2%	7%
2017	1%	1%	7%
2016	2%	1%	7%
2015	1%	1%	8%

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# White Students

4,976 Students

12,965 Students

% White Students

61%

60%

View Data

White Student Percentage Trends
Year	Ada County Average	Idaho (ID) Average	National Average
2025	61%	60%	52%
2024	61%	60%	52%
2023	57%	57%	52%
2022	59%	59%	54%
2021	59%	59%	54%
2020	66%	64%	54%
2019	65%	64%	56%
2018	65%	64%	56%
2017	65%	65%	58%
2016	66%	66%	58%
2015	66%	65%	58%

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# Hawaiian Students

20 Students

50 Students

% Hawaiian Students

n/a

# Two or more races Students

n/a

% of Two or more races Students

n/a

# Others Students

2,451 Students

6,517 Students

% of Others Students

30%

View Data

Other Races Student Percentage Trends
Year	Ada County Average	Idaho (ID) Average	National Average
2025	30%	31%	26%
2024	29%	31%	26%
2023	34%	34%	25%
2022	33%	33%	25%
2021	33%	33%	25%
2020	26%	26%	24%
2019	25%	25%	24%
2018	25%	25%	23%
2017	27%	27%	22%
2016	26%	26%	22%
2015	26%	27%	21%

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All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars

15 extracurriculars

7 extracurriculars

Average Number of Sports

10 sports

6 sports

Frequently Asked Questions

What are the top ranked private schools in Ada County, ID?

The private schools in Ada County, ID include Riverstone International School, Bishop Kelly High School, and Cole Valley Christian High School.

How many private schools are located in Ada County?

46 private schools are located in Ada County.

How much do private schools cost in Ada County?

The average tuition cost is $15,321, which is higher than the Idaho private school average tuition cost of $11,079.

How diverse are private schools in Ada County?

Ada County private schools are approximately 14% minority students, which is lower than the Idaho private school average of 15%.

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

9% of all K-12 students in Ada County are educated in private schools (compared to the ID state average of 6%).

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

44% of private schools in Ada County are religiously affiliated (most commonly Christian and Catholic).

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

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The Journey to Enrollment

Year	Ada County Average	Idaho (ID) Average	National Average
2025	183	138	179
2024	175	134	172
2023	174	128	174
2022	188	128	185
2021	180	124	180
2020	158	111	171
2019	162	113	175
2018	152	112	172
2017	163	118	180
2016	159	116	178
2015	153	107	167

Quick Facts (2026)

Quick Facts (2026)

Top Ranked Ada County Private Schools (2026)

Ada 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 (2017-2025)

Tuition and Acceptance Rate:

Tuition Cost Trends (2015-2025)

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

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Best Ada County Private Schools (2026)

Top Ranked Ada County Private Schools (2026)

Ada 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 (2017-2025)

Tuition and Acceptance Rate:

Tuition Cost Trends (2015-2025)

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