For the 2025-26 school year, there are 19 private high schools belonging to National Association of Independent Schools (NAIS) serving 8,375 students in Colorado. You can also find more schools membership associations in Colorado.
The top ranked private high schools belonging to National Association of Independent Schools (NAIS) in Colorado include Kent Denver School, Colorado Academy, and Fountain Valley School of Colorado.
The average tuition cost is $33,408, which is higher than the Colorado private high school average tuition cost of $16,723.
Top Ranked Private High Schools Belonging to National Association of Independent Schools (NAIS) in Colorado (2025-26)
School
Location
Quick Facts
3800 S Pierce St
Denver, CO 80235
(303) 914-2513
Denver, CO 80235
(303) 914-2513
Gr: PK-12 | 1,043 student Sports: 19 | Extracurrculars: 24 Tuition listed
10455 Dawson Drive
Lafayette, CO 80026
(303) 665-6679
Lafayette, CO 80026
(303) 665-6679
Gr: K-12 | 477 students Avg. class size: 15 students Sports: 11 | Extracurrculars: 7 Tuition listed
Denver Academy![Denver Academy Photo - Visual Arts]( "Denver Academy Photo - Visual Arts")
Special Education School
4400 E Iliff Avenue
Denver, CO 80222
(303) 777-5161
Denver, CO 80222
(303) 777-5161
Gr: 2-12 | 457 students Avg. class size: 12 students Sports: 11 | Extracurrculars: 11 Tuition listed
3000 Booth Falls Road
Vail, CO 81657
(970) 476-3850
Vail, CO 81657
(970) 476-3850
Gr: K-12 | 418 students Avg. class size: 15 students Sports: 11 Tuition listed
500 Holden Way
Carbondale, CO 81623
(970) 963-2562
Carbondale, CO 81623
(970) 963-2562
Gr: 9-12 | 165 students Avg. class size: 12 students Sports: 10 | Extracurrculars: 36 Tuition listed
21 Broadmoor Ave
Colorado Springs, CO 80906
(719) 434-3500
Colorado Springs, CO 80906
(719) 434-3500
Gr: PK-12 | 336 students Avg. class size: 10 students Sports: 6 | Extracurrculars: 20 Tuition & acceptance rate listed
2450 S Wabash St
Denver, CO 80231
(303) 369-0663
Denver, CO 80231
(303) 369-0663
Gr: PK-12 | 351 students Avg. class size: 16 students Sports: 9 | Extracurrculars: 9 Tuition listed
6155 Fountain Valley School Road
Colorado Springs, CO 80911
(719) 391-5251
Colorado Springs, CO 80911
(719) 391-5251
Gr: 9-12 | 230 students Avg. class size: 10 students Sports: 17 | Extracurrculars: 25 Tuition & acceptance rate listed
High Mountain Institute![High Mountain Institute Photo - Winter Ski trip in the Spring semester]( "High Mountain Institute Photo - Winter Ski trip in the Spring semester")
Special Program Emphasis
531 County Rd 5A
Leadville, CO 80461
(719) 486-8200
Leadville, CO 80461
(719) 486-8200
Gr: 11-12 | 40 students Avg. class size: 10 students Sports: 4 Tuition & acceptance rate listed
4000 East Quincy Avenue
Englewood, CO 80113
(303) 770-7660
Englewood, CO 80113
(303) 770-7660
Gr: 6-12 | 784 students Avg. class size: 15 students Sports: 20 | Extracurrculars: 19 Tuition listed
6380 S Lewiston Way
Aurora, CO 80016
(303) 269-8000
Aurora, CO 80016
(303) 269-8000
Gr: 9-12 | 1,682 student Avg. class size: 21 students Sports: 21 | Extracurrculars: 3 Tuition listed
4545 South University Boulevard
Englewood, CO 80113
(303) 762-8300
Englewood, CO 80113
(303) 762-8300
Gr: NS-12 | 678 students Avg. class size: 16 students Sports: 15 | Extracurrculars: 10 Tuition listed
Tara Performing Arts High School![Tara Performing Arts High School Photo - Ninth grade: History through Art in New York]( "Tara Performing Arts High School Photo - Ninth grade: History through Art in New York")
Special Program Emphasis
4180 19th St
Boulder, CO 80304
(303) 410-4510
Boulder, CO 80304
(303) 410-4510
Gr: 9-12 | 55 students Tuition & acceptance rate listed
Valor Christian High School![Valor Christian High School Photo - Library]( "Valor Christian High School Photo - Library")
(Christian)
3775 Grace Blvd
Littleton, CO 80126
(303) 471-3000
Littleton, CO 80126
(303) 471-3000
Gr: 9-12 | 1,200 student Sports: 16 | Extracurrculars: 2 Tuition & acceptance rate listed
818 Oak St
Steamboat Springs, CO 80487
(970) 879-1350
Steamboat Springs, CO 80487
(970) 879-1350
Gr: K-12 | 154 students Avg. class size: 13 students Tuition listed
200 San Miguel River Dr
Telluride, CO 81435
(970) 728-1969
Telluride, CO 81435
(970) 728-1969
Gr: PK-12 | 120 students Avg. class size: 8 students Sports: 4 Tuition listed
3131 Indian Road
Boulder, CO 80301
(303) 554-7363
Boulder, CO 80301
(303) 554-7363
Gr: 6-12 | 17 students Avg. class size: 6 students Extracurrculars: 4 Tuition & acceptance rate listed
University Of Denver High School
Special Program Emphasis
2306 E. Evans Avenue
Denver, CO 80208
(303) 871-2636
Denver, CO 80208
(303) 871-2636
Gr: 10-12 | 66 students
5405 Spine Rd
Boulder, CO 80301
(303) 440-7520
Boulder, CO 80301
(303) 440-7520
Gr: 6-12 | 102 students Sports: 4 | Extracurrculars: 6 Tuition listed
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