Private School Review - Established 2003
Montessori Academy Barber Station
Challenger School - Boise Top 19 · Oldest Founding Date (ID)
Challenger School - Meridian Top 19 · Oldest Founding Date (ID)

Best Ada County Private Schools (2026-27)

For the 2026-27 school year, there are 46 private schools serving 8,238 students in Ada County, ID (there are 152 public schools, serving 78,550 public students). 9% of all K-12 students are educated in private schools (compared to the ID state average of 6%).
The average tuition cost is $15,321, which is higher than the Idaho private school average tuition cost of $11,079.
44% of private schools in Ada County, ID are religiously affiliated (most commonly Christian and Catholic).

Quick Facts (2026-27)

  • # Private Schools: 46
  • # Students Served: 8,238
  • Average Tuition: $15,321
  • % Students on Financial Aid: 17%
  • Acceptance Rate: 82%
  • Average Class Size: 17 students
  • % Students of Color: 14%
  • View Ada County, ID School Trends

Quick Facts (2026-27)

  • # Private Schools: 46
  • # Students Served: 8,238
  • Average Tuition: $15,321
  • % Students on Financial Aid: 17%
  • Acceptance Rate: 82%
  • Average Class Size: 17 students
  • % Students of Color: 14%
  • View Ada County, ID School Trends

Top Ranked Ada County Private Schools (2026-27)

Challenger School - Boise Photo
Challenger School - Boise
Gr: NS-1
Avg. class size: 12 students
Daycare / Preschool
5551 W. Bloom Street
Boise, ID 83703
(208) 338-9500
View Profile
Challenger School - Meridian Photo
Challenger School - Meridian
Gr: NS-8
2020 W. Everest Lane
Meridian, ID 83646
(208) 846-8888
(1)
View Profile
Montessori Academy Barber Station Photo
Montessori Academy Barber Station
3110 East Barber Valley Drive
Boise, ID 83716
(208) 858-7831
View Profile
Montessori Academy On Parkcenter Photo
Montessori Academy On Parkcenter
Gr: PK-K | 136 students
Montessori School
649 E Parkcenter Blvd
Boise, ID 83706
(208) 845-6450
View Profile
The Ambrose School Photo
The Ambrose School
Gr: PK-12 | 761 students
Avg. class size: 23 students
Sports: 7 | Extracurriculars: 8
Christian
6100 N. Locust Grove Rd.
Meridian, ID 83646
(208) 323-3888
(3)
View Profile
Bishop Kelly High School Photo
Bishop Kelly High School
Gr: 9-12 | 945 students
Avg. class size: 21 students
Sports: 19 | Extracurriculars: 32
Catholic
7009 Franklin Rd
Boise, ID 83709
(208) 375-6010
View Profile
Boise Valley Adventist School Photo
Boise Valley Adventist School
Gr: PK-8 | 100 students
Avg. class size: 20 students
Sports: 3 | Extracurriculars: 2
Seventh Day Adventist
925 N Cloverdale Road
Boise, ID 83713
(208) 376-7141
(1)
View Profile
Map of Calvary Christian School
Calvary Christian School
Gr: PK-7 | 228 students
Avg. class size: 18 students
Christian
111 Auto Drive
Boise, ID 83709
(208) 376-0260
View Profile
Cole Valley Christian High School Photo
Cole Valley Christian High School
Gr: NS-12 | 1,517 students
Avg. class size: 24 students
Sports: 14 | Extracurriculars: 12
Christian
200 E Carlton Ave
Meridian, ID 83642
(208) 947-1212
(8)
View Profile
Map of Cole Valley Christian School
Cole Valley Christian School
Gr: 7-12 | 513 students
Avg. class size: 20 students
Christian
8775 W Ustick Rd
Boise, ID 83704
(208) 947-1212
View Profile
Map of Logan Christian Academy
Logan Christian Academy
Gr: K-7 | 7 students
Avg. class size: 13 students
Alternative School (Christian)
219 N Roosevelt St
Boise, ID 83706
(208) 912-2783
View Profile
Riverstone International School Photo
Riverstone International School
Gr: PK-12 | 355 students
Avg. class size: 15 students
Sports: 11 | Extracurriculars: 21
5521 E Warm Springs Ave
Boise, ID 83716
(208) 424-5000
(11)
View Profile
Map of Sacred Heart Catholic School
Sacred Heart Catholic School
Gr: PK-8 | 218 students
Catholic
3901 Cassia St
Boise, ID 83705
(208) 344-9738
View Profile
St. Joseph's Catholic School Photo
St. Joseph's Catholic School
Gr: K-8 | 356 students
Catholic
825 W Fort St
Boise, ID 83702
(208) 342-4909
(1)
View Profile
Map of St. Marks Elementary School
St. Marks Elementary School
Gr: PK-8 | 345 students
Avg. class size: 20 students
Catholic
7503 W Northview St
Boise, ID 83704
(208) 375-6654
View Profile
St. Marys School Photo
St. Marys School
Gr: PK-8 | 180 students
Avg. class size: 15 students
Sports: 6
Catholic
2620 W State St
Boise, ID 83702
(208) 342-7476
(1)
View Profile
Map of A Child's Choice Montessori School
A Child's Choice Montessori School
Gr: PK-K | 29 students
Montessori School
1797 S Millenium Way
Meridian, ID 83642
(208) 288-1990
View Profile
Map of Boise KinderCare
Boise KinderCare
Gr: NS-PK
Daycare / Preschool
1410 N Etheridge Ln.
Boise, ID 83704
(208) 321-2094
View Profile
Map of The Children's School Of Boise
The Children's School Of Boise
Gr: NS-K | 79 students
Avg. class size: 12 students
Daycare / Preschool
1015 N 8th St
Boise, ID 83702
(208) 343-6840
View Profile
Map of Cloverdale Christian Ds
Cloverdale Christian Ds
Gr: PK-K | 102 students
Alternative School (Church of God)
3755 S Cloverdale Rd
Boise, ID 83709
(208) 362-1700
View Profile
Show 11 more private schools in Ada County, ID (out of 46 total schools)
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[+] Show Closed Private Schools in Ada County, Idaho

Ada County Private Schools (Closed)

Map of Five Mile Montessori
Five Mile Montessori
Gr: PK-K | 14 students
Montessori School
1439 S Weideman Ave
Boise, ID 83709
(208) 322-8981
View Profile
Map of Maranatha Christian School
Maranatha Christian School
Gr: K-6 | 66 students
Assembly of God
12000 W Fairview Ave
Boise, ID 83713
(208) 376-7272
View Profile
Map of Vineyard Christian Academy
Vineyard Christian Academy
Gr: PK-8 | 108 students
Specialized Curriculum (Christian)
4950 N Bradley St
Garden City, ID 83714
(208) 562-4551
View Profile

Overview

Category
This State (ID)
US
# Schools
50 Schools

Trends in Total Number of Private Schools

YearAda County Total Schools
202549
202449
202344
202238
202139
202040
201936
201839
201732
201636
201537
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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
8,238 Students
21,692 Students

Trends in the Average Number of Students Per Private School

YearAda County AverageIdaho (ID) AverageNational Average
2025183138179
2024175134172
2023174128174
2022188128185
2021180124180
2020158111171
2019162113175
2018152112172
2017163118180
2016159116178
2015153107167
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% Average Students of Color
14%
15%

Percentage of Students of Color Trends (2015-2025)

YearAda County AverageIdaho (ID) AverageNational Average
202514%15%34%
202415%15%34%
202314%15%33%
202212%13%33%
202112%14%32%
202013%13%32%
201915%14%31%
201814%14%31%
201713%14%32%
201612%14%32%
201513%14%32%
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Academics and Faculty:

# Teachers
681 Teachers
1,686 Teachers
Average Student-Teacher Ratio
12:1
13:1

Student-Teacher Ratio Trends (2015-2025)

YearAda County AverageIdaho (ID) AverageNational Average
202512:113:111:1
202412:113:111:1
202312:113:111:1
202214:113:111:1
202114:113:111:1
202014:113:112:1
201914:112:112:1
201813:113:112:1
201714:113:112:1
201614:113:112:1
201514:113:112:1
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% Average Faculty w/Advanced Degree
66%
57%

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

YearAda County AverageIdaho (ID) AverageNational Average
202566%57%55%
202457%54%54%
202354%51%54%
202254%50%54%
202161%51%54%
202044%45%54%
201940%45%53%
201847%46%53%
201747%45%53%
201649%48%52%
201555%48%52%
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Average Class Size
17 students
15 students

Class Size Trends (2015-2025)

YearAda County AverageIdaho (ID) AverageNational Average
2025171515
2024171515
2023171415
2022161415
2021171415
2020161415
2019161415
2018161415
2017151315
2016151315
2015151215
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Average Number of AP Courses
17 courses
10 courses
Average SAT score
1249
(Out of 1600)
Average ACT score
27
(Out of 36)

Tuition and Acceptance Rate:

Average Yearly Tuition Cost
$15,321
$11,079

Tuition Cost Trends (2015-2025)

YearAda County AverageIdaho (ID) AverageNational 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%

Percent on Financial Aid Trends (2015-2025)

YearAda County AverageIdaho (ID) AverageNational Average
202516%19%34%
202418%20%34%
202322%21%34%
202222%22%33%
202122%22%33%
202021%21%32%
201920%21%31%
201820%20%30%
201720%22%30%
201617%25%29%
201517%25%28%
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Average Financial Aid Grant
$5,171
$3,626

Financial Aid Grant Trends (2022-2025)

YearAda County AverageIdaho (ID) AverageNational 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
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Average Acceptance Rate
82%
87%

Acceptance Rate Trends (2015-2025)

YearAda County AverageIdaho (ID) AverageNational Average
202582%87%81%
202488%89%85%
202387%89%85%
202286%90%85%
202186%91%85%
202087%91%85%
201986%91%85%
201888%90%85%
201787%90%85%
201687%90%85%
201589%90%85%
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Average Endowment Size
$21.33 million
$ million

Students by Ethnicity:

0.54
0.55

Diversity Score Trends

YearAda County AverageIdaho (ID) AverageNational Average
20250.540.550.65
20240.550.550.65
20230.560.560.65
20220.550.550.64
20210.550.550.64
20200.510.520.64
20190.520.520.63
20180.510.520.63
20170.510.510.61
20160.500.500.61
20150.500.510.61
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# American Indian Students
21 Students
92 Students
% American Indian Students
n/a
1%
# Asian Students
195 Students
459 Students
% Asian Students
3%
2%

Asian Student Percentage Trends

YearAda County AverageIdaho (ID) AverageNational Average
20253%2%5%
20244%2%5%
20235%3%5%
20223%3%4%
20213%2%4%
20203%3%4%
20194%3%4%
20184%3%4%
20173%2%4%
20163%2%4%
20154%2%4%
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# Hispanic Students
403 Students
1,063 Students
% Hispanic Students
5%
5%

Hispanic Student Percentage Trends

YearAda County AverageIdaho (ID) AverageNational Average
20255%5%9%
20245%5%9%
20233%4%9%
20223%4%8%
20213%4%9%
20203%4%9%
20194%5%8%
20184%5%8%
20174%4%8%
20163%4%8%
20153%4%8%
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# Black Students
109 Students
383 Students
% Black Students
1%
2%

Black Student Percentage Trends

YearAda County AverageIdaho (ID) AverageNational Average
20251%2%7%
20241%2%7%
20231%2%8%
20222%1%7%
20212%1%7%
20202%2%8%
20192%2%7%
20182%2%7%
20171%1%7%
20162%1%7%
20151%1%8%
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# White Students
4,976 Students
12,965 Students
% White Students
61%
60%

White Student Percentage Trends

YearAda County AverageIdaho (ID) AverageNational Average
202561%60%52%
202461%60%52%
202357%57%52%
202259%59%54%
202159%59%54%
202066%64%54%
201965%64%56%
201865%64%56%
201765%65%58%
201666%66%58%
201566%65%58%
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# Hawaiian Students
20 Students
50 Students
% Hawaiian Students
n/a
n/a
# Two or more races Students
n/a
n/a
% of Two or more races Students
n/a
n/a
# Others Students
2,451 Students
6,517 Students
% of Others Students
30%
30%

Other Races Student Percentage Trends

YearAda County AverageIdaho (ID) AverageNational Average
202530%31%26%
202429%31%26%
202334%34%25%
202233%33%25%
202133%33%25%
202026%26%24%
201925%25%24%
201825%25%23%
201727%27%22%
201626%26%22%
201526%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 top ranked private schools in Ada County, ID include Sacred Heart Catholic School, Riverstone International School, and The Ambrose 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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