Castle Rock Christian Academy Photo - Castle Rock Christian Academy has been educating the community for over a decade. We have a big campus but small class sizes.

Best Douglas County Private High Schools (2026)

For the 2026 school year, there are 9 private high schools serving 3,459 students in Douglas County, CO.
The top-ranked private high schools in Douglas County, CO include Mile High Academy, Ambleside Colorado, and Arma Dei Academy.
The average acceptance rate is 77%, which is lower than the Colorado private high school average acceptance rate of 83%.
78% of private high schools in Douglas County, CO are religiously affiliated (most commonly Christian and Seventh Day Adventist).

Top-Ranked Douglas County Private High Schools (2026)

School
Location
Quick Facts
Ambleside Colorado
Ambleside Colorado Photo - Arduino Programming Project
(Christian)
(3)
9941 Lone Tree Parkway
Lone Tree, CO 80124
(720) 712-0464
Gr: K-12 | 180 students Avg. class size: 16 students Sports: 5 | Extracurrculars: 4 Tuition & acceptance rate listed
Arma Dei Academy
Arma Dei Academy Photo
Special Program Emphasis (Christian)
341 E. Wildcat Reserve Parkway
Littleton, CO 80126
(303) 346-4523
Gr: PK-12 | 602 students Avg. class size: 16 students Sports: 6 | Extracurrculars: 3 Tuition listed
858 W. Happy Canyon Rd. Ste. 170
Castle Rock, CO 80108
(720) 961-5073
Gr: 1-12 Avg. class size: 10 students Tuition & acceptance rate listed
Lutheran High School
Lutheran High School Photo - Lutheran High School - Encouraging academic excellence, Nurturing growth in Christ.
(Lutheran Church Missouri Synod)
(3)
11249 N Newlin Gulch Blvd
Parker, CO 80134
(303) 841-5551
Gr: 9-12 | 988 students Avg. class size: 25 students Sports: 14 | Extracurrculars: 21 Tuition & acceptance rate listed
Mile High Academy
Mile High Academy Photo
(Seventh Day Adventist)
(3)
1733 Dad Clark Drive
Littleton, CO 80126
(303) 744-1069
Gr: PK-12 | 256 students Avg. class size: 15 students Sports: 4 | Extracurrculars: 7 Tuition & acceptance rate listed
Valor Christian High School
Valor Christian High School Photo - Library
(Christian)
3775 Grace Blvd
Littleton, CO 80126
(303) 471-3000
Gr: 9-12 | 1,200 student Sports: 16 | Extracurrculars: 2 Tuition & acceptance rate listed
Castle Rock Christian Academy
Castle Rock Christian Academy Photo - Our teachers collectively have more than 120 years of experience. They teach using Christian publishers, updated resources and assessments to ensure student success. Our principal has more than 30 years experience in teaching and leading in public and private schools.
(Christian)
(1)
4881 Cherokee Dr
Castle Rock, CO 80109
(720) 598-2722
Gr: PK-9 Tuition listed
Castle Rock Classical Academy
Special Program Emphasis (Christian)
2607 Fifth Street
Castle Rock, CO 80104
(303) 515-0727
Gr: K-10 | 110 students Avg. class size: 7 students Tuition & acceptance rate listed
Japanese School Of Denver
Special Program Emphasis
Po Box 630044
Littleton, CO 80163
(303) 949-3381
Gr: PK-9 | 123 students Tuition listed
[+] Show Closed Private Schools in Douglas County, Colorado

Douglas County Private Schools (Closed)

School
Location
Quick Facts
Castle Academy (Closed 2024)
Daycare / Preschool
3760 Dacoro Lane
Castle Rock, CO 80109
(303) 663-7300
Gr: NS-PK | 80 students
7550 Park Meadows Drive
Lone Tree, CO 80124
(303) 662-9150
Gr: PK-K | 229 students Avg. class size: 12 students Tuition listed
16975 Village Center Dr E
Parker, CO 80134
(303) 841-7300
Gr: NS-PK Tuition listed
Woodlands Academy (Closed 2017)
Special Program Emphasis
1057 N. Park Street
Castle Rock, CO 80109
(303) 814-8582
Gr: 1-8 | 20 students Tuition listed

Overview

This County (Douglas County)
This State (CO)
# Schools
9 Schools

Student Body:

# Students
3,459 Students
29,102 Students
% Average Students of Color
19%
25%

Academics and Faculty:

# Teachers
275 Teachers
3,058 Teachers
Average Student-Teacher Ratio
13:1
10:1
% Average Faculty w/Advanced Degree
53%
55%
Average Class Size
15 students
13 students
Average Number of AP Courses
11 courses
12 courses
Average SAT score
1235
(Out of 1600)
1254
Average ACT score
27
(Out of 36)
25

Tuition and Acceptance Rate:

Average Yearly Tuition Cost
$14,619
$16,376
Average Summer Program Cost
$900
$2,471
Average % on Financial Aid
38%
33%
Average Financial Aid Grant
$6,000
$8,504
Average Acceptance Rate
77%
83%
Average Endowment Size
$50 million
$30.76 million

Students by Ethnicity:

0.59
0.58
# American Indian Students
8 Students
269 Students
% American Indian Students
n/a
1%
# Asian Students
108 Students
914 Students
% Asian Students
3%
3%
# Hispanic Students
149 Students
2,811 Students
% Hispanic Students
5%
9%
# Black Students
44 Students
1,099 Students
% Black Students
2%
4%
# White Students
1,645 Students
17,970 Students
% White Students
51%
61%
# Hawaiian Students
11 Students
37 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
1,264 Students
6,384 Students
% of Others Students
39%
22%
All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars
7 extracurriculars
9 extracurriculars
Average Number of Sports
9 sports
8 sports

Frequently Asked Questions

What are the top-ranked private high schools in Douglas County, CO?
The top-ranked private high schools in Douglas County, CO include Mile High Academy, Ambleside Colorado, and Arma Dei Academy.
How many private high schools are located in Douglasunty?
9 private high schools are located in Douglasunty.
How diverse are private high schools in Douglasunty?
Douglasunty private high schools are approximately 19% minority students, which is lower than the Colorado private school average of 25%.
What percentage of private high schools are religiously affiliated in Douglasunty?
78% of private high schools in Douglasunty are religiously affiliated (most commonly Christian and Seventh Day Adventist).
Which private high schools in Douglasunty are often viewed compared to one another?
Popular comparisons of private high schools in Douglasunty include: Lutheran High School vs. Valor Christian High School, Valor Christian High School vs. Lutheran High School

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