Boise Valley Adventist School Photo - Red Ribbon Week

Best Ada County Private Elementary Schools (2026)

For the 2026 school year, there are 26 private elementary schools serving 6,104 students in Ada County, ID.
The top-ranked private elementary schools in Ada County, ID include Cole Valley Christian High School, St. Joseph's Catholic School, and The Ambrose School.
The average tuition cost is $15,093, which is higher than the Idaho private elementary school average tuition cost of $11,390.
54% of private elementary schools in Ada County, ID are religiously affiliated (most commonly Christian and Catholic).

Top-Ranked Ada County Private Elementary Schools (2026)

School
Location
Quick Facts
5521 E Warm Springs Ave
Boise, ID 83716
(208) 424-5000
Gr: PK-12 | 416 students Avg. class size: 15 students Sports: 10 | Extracurrculars: 21 Tuition & acceptance rate listed
Challenger School - Boise
Challenger School - Boise Photo
Daycare / Preschool
5551 W. Bloom Street
Boise, ID 83703
(208) 338-9500
Gr: NS-1 Avg. class size: 12 students Tuition & acceptance rate listed
2020 W. Everest Lane
Meridian, ID 83646
(208) 846-8888
Gr: NS-8
The Ambrose School
The Ambrose School Photo
(Christian)
(3)
6100 N. Locust Grove Rd.
Meridian, ID 83646
(208) 323-3888
Gr: PK-12 | 761 students Avg. class size: 23 students Sports: 7 | Extracurrculars: 8 Tuition & acceptance rate listed
Boise Valley Adventist School
Boise Valley Adventist School Photo - Tree Lighting program
(Seventh Day Adventist)
(1)
925 N Cloverdale Road
Boise, ID 83713
(208) 376-7141
Gr: PK-8 | 100 students Avg. class size: 20 students Sports: 3 | Extracurrculars: 2 Tuition listed
Calvary Christian School
(Christian)
111 Auto Drive
Boise, ID 83709
(208) 376-0260
Gr: PK-7 | 228 students Avg. class size: 18 students Tuition & acceptance rate listed
Cole Valley Christian High School
Cole Valley Christian High School Photo
(Christian)
(8)
200 E Carlton Ave
Meridian, ID 83642
(208) 947-1212
Gr: NS-12 | 1,452 student Avg. class size: 24 students Sports: 14 | Extracurrculars: 12 Tuition & acceptance rate listed
Cole Valley Christian School
(Christian)
8775 W Ustick Rd
Boise, ID 83704
(208) 947-1212
Gr: 7-12 | 513 students Avg. class size: 20 students Tuition listed
Logan Christian Academy
Alternative School (Christian)
219 N Roosevelt St
Boise, ID 83706
(208) 912-2783
Gr: K-7 | 7 students Avg. class size: 13 students Tuition & acceptance rate listed
Sacred Heart Catholic School
(Catholic)
3901 Cassia St
Boise, ID 83705
(208) 344-9738
Gr: PK-8 | 218 students Tuition listed
St. Joseph's Catholic School
St. Joseph's Catholic School Photo
(Catholic)
(1)
825 W Fort St
Boise, ID 83702
(208) 342-4909
Gr: K-8 | 356 students Tuition listed
St. Marks Elementary School
(Catholic)
7503 W Northview St
Boise, ID 83704
(208) 375-6654
Gr: PK-8 | 345 students Avg. class size: 20 students Tuition listed
St. Marys School
St. Marys School Photo - Our welcoming and accepting community is a cornerstone of our culture that encourages family engagement and partnership.
(Catholic)
(1)
2620 W State St
Boise, ID 83702
(208) 342-7476
Gr: PK-8 | 180 students Avg. class size: 15 students Sports: 6 Tuition listed
Cole Valley Christian Middle School
(Christian)
8775 Ustick Road
Boise, ID 83704
(208) 344-9862
Gr: 6-8 | 85 students Avg. class size: 15 students Tuition listed
Eagle Adventist Christian School & Preschool
(Seventh Day Adventist)
538 W State St
Eagle, ID 83616
(208) 938-0093
Gr: PK-7 | 38 students Avg. class size: 15 students
Foothills School of Arts & Sciences
Foothills School of Arts & Sciences Photo - Foothills students become capable and confident learners during their time at Foothills! Foothills allows students to share their voice, empowers them to become critical thinkers and open-minded listeners, and promotes a positive school culture where everyone is valued.
Special Program Emphasis
601 South 9th Street
Boise, ID 83702
(208) 331-9260
Gr: PK-9 | 158 students Avg. class size: 13 students Tuition & acceptance rate listed
Hall Institute For The Arts
Special Program Emphasis
1167 E Iron Eagle Dr
Eagle, ID 83616
(208) 957-7024
Gr: 7-12 | 28 students
Heroes Academy
Montessori School
(3)
5771 N Discovery Way
Boise, ID 83713
(208) 991-4376
Gr: PK-12 | 79 students Tuition listed
Hillside Academy
Alternative School
3900 Hill Road
Boise, ID 83703
(208) 343-8919
Gr: PK-1 | 22 students Tuition listed
Intermountain School & Hosp
Alternative School
303 N Allumbaugh St
Boise, ID 83704
(208) 350-2324
Gr: 7-12 | 20 students
Kidz Connection Montessori
Montessori School
2310 Columbus St
Boise, ID 83705
(208) 384-1191
Gr: PK-6 | 112 students
Montessori Academy
Montessori School
1400 Park Ln
Eagle, ID 83616
(208) 939-6333
Gr: PK-6 | 107 students Avg. class size: 15 students
155 E Boise Avenue
Boise, ID 83706
(208) 386-9108
Gr: PK-3 | 56 students Tuition listed
Petra Christian Academy
(Christian)
3080 Wildwood St
Boise, ID 83713
(208) 505-0066
Gr: 1-9 | 24 students
Rose Hill Montessori School
Montessori School
4603 W Albion St
Boise, ID 83705
(208) 385-7674
Gr: PK-6 | 52 students
Treasure Valley Baptist School
(Baptist)
1300 S Teare Ave
Meridian, ID 83642
(208) 898-9023
Gr: PK-11 | 46 students
[+] Show Closed Private Schools in Ada County, Idaho

Ada County Private Schools (Closed)

School
Location
Quick Facts
1439 S Weideman Ave
Boise, ID 83709
(208) 322-8981
Gr: PK-K | 14 students
12000 W Fairview Ave
Boise, ID 83713
(208) 376-7272
Gr: K-6 | 66 students
Vineyard Christian Academy (Closed 2024)
Special Program Emphasis (Christian)
4950 N Bradley St
Garden City, ID 83714
(208) 562-4551
Gr: PK-8 | 108 students

Overview

This County (Ada County)
This State (ID)
# Schools
28 Schools

Student Body:

# Students
6,104 Students
18,486 Students
% Average Students of Color
13%
13%

Academics and Faculty:

# Teachers
492 Teachers
1,423 Teachers
Average Student-Teacher Ratio
12:1
13:1
% Average Faculty w/Advanced Degree
64%
56%
Average Class Size
17 students
15 students
Average Number of AP Courses
17 courses
9 courses
Average SAT score
1258
(Out of 1600)
1245
Average ACT score
28
(Out of 36)
28

Tuition and Acceptance Rate:

Average Yearly Tuition Cost
$15,093
$11,390
Average % on Financial Aid
13%
20%
Average Financial Aid Grant
$5,171
$3,626
Average Acceptance Rate
80%
87%
Average Endowment Size
$84.67 million
$53 million

Students by Ethnicity:

0.52
0.53
# American Indian Students
15 Students
83 Students
% American Indian Students
n/a
n/a
# Asian Students
154 Students
414 Students
% Asian Students
3%
2%
# Hispanic Students
272 Students
867 Students
% Hispanic Students
5%
5%
# Black Students
86 Students
310 Students
% Black Students
1%
2%
# White Students
3,966 Students
11,599 Students
% White Students
64%
63%
# Hawaiian Students
13 Students
41 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
1,671 Students
5,089 Students
% of Others Students
27%
28%
All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars
11 extracurriculars
7 extracurriculars
Average Number of Sports
8 sports
6 sports

Frequently Asked Questions

What are the top-ranked private elementary schools in Ada County, ID?
The top-ranked private elementary schools in Ada County, ID include Cole Valley Christian High School, St. Joseph's Catholic School, and The Ambrose School.
How many private elementary schools are located in Ada County?
26 private elementary schools are located in Ada County.
How much do private elementary schools cost in Ada County?
The average tuition cost is $15,093, which is higher than the Idaho private school average tuition cost of $11,390.
How diverse are private elementary schools in Ada County?
Ada County private elementary schools are approximately 13% minority students, which is same as the Idaho private school average of 13%.
What percentage of private elementary schools are religiously affiliated in Ada County?
54% of private elementary schools in Ada County are religiously affiliated (most commonly Christian and Catholic).
Which private elementary schools in Ada County are often viewed compared to one another?

Recent Articles

Free Private Schools & Voucher Programs in 2025
Free Private Schools & Voucher Programs in 2025
Updated guide to free private schools and school voucher programs, 2025 policies, costs, equity issues, and how families access tuition support.
Social Emotional Learning 2025: Policy, Practice and Outcomes
Social Emotional Learning 2025: Policy, Practice and Outcomes
Updated 2025 review of social emotional learning in schools, research outcomes, key trends, challenges and future paths for parents and educators.
Private School Admissions for Siblings: Costs and Timing
Private School Admissions for Siblings: Costs and Timing
Learn how private school admissions for siblings affect costs, discounts, and timing strategies for families planning multiple enrollments.