Private School Review - Established 2003
St. Mary's Academy

Oldest Private High Schools in Colorado

The average private high school in Colorado was founded around 1978 (2024).
The oldest private high school in Colorado is St. Mary's Academy, founded in 1864.
Year Founded Range: 1864 1983 Avg. Year Founded: 1948

Oldest Private High Schools in Colorado (2024)

School
Founding Date
Grades
Location
Rank: #11.
St. Mary's Academy
St. Mary's Academy Photo - St. Mary's Academy High School excels at preparing young women for leadership in a global society. Our goal is to empower our students through the development of analytical skills, confidence, and generosity to make a difference in the world around them.
(Catholic)
(2)
Founding Date: 1864
Grades: NS-12
4545 South University Boulevard
Englewood, CO 80113
(303) 762-8300
Rank: #22.
Regis Jesuit High School
Regis Jesuit High School Photo
(Catholic)
(1)
Founding Date: 1877
Grades: 9-12
6400 S Lewiston Way
Aurora, CO 80016
(303) 269-8000
Rank: #33.
St. Mary's High School
St. Mary's High School Photo - Mens' Athletics
(Catholic)
(4)
Founding Date: 1885
Grades: 9-12
2501 E Yampa St
Colorado Springs, CO 80909
(719) 635-7540
Rank: #44.
Colorado Academy
Colorado Academy Photo - Colorado Academy starts with Pre-Kindergartners and graduates seniors who have become curious, kind, courageous, and adventurous learners and leaders--ready to make an impact in the communities where they choose to land.
Founding Date: 1906
Grades: PK-12
3800 S Pierce St
Denver, CO 80235
(303) 914-2513
Rank: #55.
Campion Academy
Campion Academy Photo - Center campus
(Seventh Day Adventist)
Founding Date: 1907
Grades: 9-12
300 42nd St SW
Loveland, CO 80537
(970) 667-5592
Rank: #66.
Mile High Academy
Mile High Academy Photo
(Seventh Day Adventist)
(3)
Founding Date: 1913
Grades: PK-12
1733 Dad Clark Drive
Littleton, CO 80126
(303) 744-1069
Rank: #7 - 87. - 8.
Brighton Adventist Academy
Brighton Adventist Academy Photo - BAA Sports League: Sports included are soccer, basketball and flag football.
(Seventh Day Adventist)
Founding Date: 1916
Grades: PK-10
820 S 5th Ave
Brighton, CO 80601
(303) 659-1223
Rank: #7 - 87. - 8.
Denver Christian School
Denver Christian School Photo - Every day is an open house at Denver Christian School.We look forward to providing a personal tour to share what DCS has to offer your students & family.Please join us this summer, starting June 9 on Sundays 2-4 pm and Wednesdays 6-8 pm, to preview our school and learn more about Denver Christian School.
(Christian)
Founding Date: 1916
Grades: PK-12
3898 S. Teller St.
Denver, CO 80235
(303) 733-2421
Rank: #99.
Belleview Christian School
Belleview Christian School Photo - As a college preparatory school, our standards at Belleview Christian School are high. Specials include Art, Music (Band, Choir, and Strings), Theatre, PE, Chapel, Spanish, Computer, and more depending upon the students grade level. We strive for, as one parent put it: "An education founded on God`s precepts, focused on God`s glory."
(Christian)
(4)
Founding Date: 1920
Grades: NS-12
3455 W 83rd Ave
Westminster, CO 80031
(303) 427-5459
Rank: #10 - 1110. - 11.
Holy Family High School
(Catholic)
Founding Date: 1922
Grades: 9-12
5195 W 144th Ave
Broomfield, CO 80023
(303) 410-1411
Rank: #10 - 1110. - 11.
Kent Denver School
Kent Denver School Photo
Founding Date: 1922
Grades: 6-12
4000 East Quincy Avenue
Englewood, CO 80113
(303) 770-7660
Rank: #1212.
Fountain Valley School of Colorado
Fountain Valley School of Colorado Photo - Fountain Valley School offers visual art classes in ceramics, sculpture, painting/drawing, jewelry-making (metal-smithing), photography, and film. The School's three-story Art Barn is dedicated solely to the pursuit of these fields.
Founding Date: 1930
Grades: 9-12
6155 Fountain Valley School Road
Colorado Springs, CO 80911
(719) 391-5251
Rank: #1313.
Mullen High School
Mullen High School Photo - Class of 2023 Celebrate with the various colleges they will attend starting in fall 2023. Congrats Class of 2023!
(Catholic)
(1)
Founding Date: 1931
Grades: 9-12
3601 S Lowell Blvd
Denver, CO 80236
(303) 716-1764
Rank: #1414.
Colorado Rocky Mountain School
Founding Date: 1953
Grades: 9-12
500 Holden Way
Carbondale, CO 81623
(970) 963-2562
Rank: #1515.
Lutheran High School
Lutheran High School Photo - Lutheran High School - Encouraging academic excellence, Nurturing growth in Christ.
(Lutheran Church Missouri Synod)
(3)
Founding Date: 1955
Grades: 9-12
11249 N Newlin Gulch Blvd
Parker, CO 80134
(303) 841-5551
Rank: #1616.
Steamboat Mountain School
Steamboat Mountain School Photo - Get outdoors on the weekends, mountain biking, ice climbing, or backcountry skiing. You can try it for the first time!
(6)
Founding Date: 1957
Grades: 9-12
42605 County Road 36
Steamboat Springs, CO 80487
(970) 879-1350
Rank: #1717.
Bishop Machebeuf High School
(Catholic)
(1)
Founding Date: 1958
Grades: 9-12
458 Uinta Way
Denver, CO 80230
(303) 344-0082
Rank: #18 - 1918. - 19.
The Colorado Springs School
The Colorado Springs School Photo - The Colorado Springs School is PreK-12 college-preparatory day and international school nestled in the heart of Broadmoor.
(1)
Founding Date: 1962
Grades: PK-12
21 Broadmoor Ave
Colorado Springs, CO 80906
(719) 434-3500
Rank: #18 - 1918. - 19.
Vail Mountain School
Vail Mountain School Photo
(7)
Founding Date: 1962
Grades: K-12
3000 Booth Falls Road
Vail, CO 81657
(970) 476-3850
Rank: #2020.
Dawson School
Dawson School Photo - Each fall, the entire high school participates in class trips to many locations around the state. Students learn camping skills, rafting, leadership, team building and participate in community service.
(8)
Founding Date: 1970
Grades: K-12
10455 Dawson Drive
Lafayette, CO 80026
(303) 665-6679
Rank: #2121.
Colorado Springs Christian Schools
(Christian)
(1)
Founding Date: 1971
Grades: K-12
4855 Mallow Rd
Colorado Springs, CO 80907
(719) 599-3553
Rank: #2222.
Denver Academy
Denver Academy Photo - Visual Arts
Special Education School
Founding Date: 1972
Grades: 2-12
4400 E Iliff Avenue
Denver, CO 80222
(303) 777-5161
Rank: #23 - 2423. - 24.
Elmwood Baptist Academy
Elmwood Baptist Academy Photo - A picture of the entire school.
(Baptist)
(7)
Founding Date: 1973
Grades: PK-12
13100 East 144th Avenue
Brighton, CO 80601
(303) 659-3818
Rank: #23 - 2423. - 24.
September School
September School Photo - Winter Trip in Estes Park
(1)
Founding Date: 1973
Grades: 6-12
525 Canyon Blvd
Boulder, CO 80302
(303) 443-9933
Rank: #25 - 2625. - 26.
Denver Waldorf School
Denver Waldorf School Photo - The Denver Waldorf School
Special Program Emphasis
(6)
Founding Date: 1974
Grades: PK-12
2100 S. Pennsylvania St.
Denver, CO 80210
(303) 777-0531
Rank: #25 - 2625. - 26.
Parkhill Christian Academy
(Baptist)
Founding Date: 1974
Grades: PK-9
4235 Parkhill Pl
Pueblo, CO 81008
(719) 544-6174
Rank: #27 - 2827. - 28.
Colorado Timberline Academy
Colorado Timberline Academy Photo - Weekend Trip to Bisti Badlands in New Mexico
Alternative School
(1)
Founding Date: 1975
Grades: 9-12
454 Academy Drive
Durango, CO 81301
(970) 247-5898
Rank: #27 - 2827. - 28.
Denver Jewish Day School
Denver Jewish Day School Photo - 10th graders in the Negev desert region of Israel on their annual six week Hebrew and Israel immersion experience.
(Jewish)
Founding Date: 1975
Grades: NS-12
2450 S Wabash St
Denver, CO 80231
(303) 369-0663
Rank: #29 - 3029. - 30.
Accelerated Schools
Accelerated Schools Photo
(1)
Founding Date: 1977
Grades: 5-12
2160 South Cook Street
Denver, CO 80210
(303) 758-2003
Rank: #29 - 3029. - 30.
Immanuel Lutheran School
Immanuel Lutheran School Photo - The mission of Immanuel Lutheran Church and School (ILCS) is to transform lives by loving, learning and living in Jesus. We reveal the love and grace of Jesus to our community by our radical hospitality, transformational learning and fearless living.
(Lutheran Church Missouri Synod)
Founding Date: 1977
Grades: NS-12
4650 Sunview Drive
Loveland, CO 80538
(970) 667-7606
Rank: #3131.
Calvary Christian School
(Baptist)
(1)
Founding Date: 1979
Grades: K-12
1415 Elm Avenue
Canon City, CO 81212
(719) 275-5349
Rank: #32 - 3332. - 33.
Colorado West Christian School
(Christian)
Founding Date: 1981
Grades: PK-12
2705 Sunnyside Rd
Montrose, CO 81401
(970) 249-1094
Rank: #32 - 3332. - 33.
Pikes Peak Christian School
(Church of Christ)
(3)
Founding Date: 1981
Grades: NS-12
5905 Flintridge Dr
Colorado Springs, CO 80918
(719) 598-8610
Rank: #3434.
Change Christian Academy
(Assembly of God)
Founding Date: 1982
Grades: PK-12
12505 Elmendorf Place
Denver, CO 80239
(303) 373-5200
Rank: #35 - 3735. - 37.
Cedar Wood
(Christian)
Founding Date: 1983
Grades: K-11
11430 East 19th Avenue
Aurora, CO 80010
(303) 361-6456
Show 45 more private schools in CO (out of 80 total schools)
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Frequently Asked Questions

What is the Colorado average Private High Schools founding year?
The Colorado average Private High Schools founding year is 1978 for 2024.
What are the Private High Schools with oldest founding year in Colorado?
The top ranked Private High Schools in Colorado include St. Mary's Academy, Regis Jesuit High School and St. Mary's High School.

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