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Colorado Academy Top 3 · Highest Avg. SAT Score (CO)
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Denver Academy

Best Colorado Private Schools Belonging to Association of Colorado Independent Schools (ACIS) (2026)

For the 2026 school year, there are 33 private schools belonging to Association of Colorado Independent Schools (ACIS) serving 10,599 students in Colorado. You can also find more schools membership associations in Colorado.
The top ranked private schools belonging to Association of Colorado Independent Schools (ACIS) in Colorado include The Colorado Springs School, Colorado Academy, and Kent Denver School.
The average tuition cost is $28,907, which is higher than the Colorado private school average tuition cost of $14,696.
12% of private schools belonging to Association of Colorado Independent Schools (ACIS) in Colorado are religiously affiliated (most commonly Catholic and Jewish).

Quick Facts (2026)

  • # Private Schools: 33

Quick Facts (2026)

  • # Private Schools: 33

Top Ranked Private Schools Belonging to Association of Colorado Independent Schools (ACIS) in Colorado (2026)

Aspen Academy Photo
Aspen Academy
Gr: NS-8 | 580 students
Avg. class size: 16 students
Sports: 7 | Extracurriculars: 22
5859 S University Blvd
Littleton, CO 80121
(303) 346-3500
(9)
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Boulder Country Day Photo
Boulder Country Day
Gr: NS-8 | 284 students
Avg. class size: 16 students
Sports: 5 | Extracurriculars: 7
4820 Nautilus Ct N
Boulder, CO 80301
(303) 527-4931
(13)
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Colorado Academy Photo
Colorado Academy
Gr: PK-12 | 1,043 students
Sports: 19 | Extracurriculars: 24
3800 S Pierce St
Denver, CO 80235
(303) 914-2513
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The Colorado Springs School Photo
The Colorado Springs School
Gr: PK-12 | 214 students
Avg. class size: 12 students
Sports: 7 | Extracurriculars: 17
21 Broadmoor Ave
Colorado Springs, CO 80906
(719) 434-3500
(1)
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Dawson School Photo
Dawson School
Gr: K-12 | 477 students
Avg. class size: 15 students
Sports: 11 | Extracurriculars: 7
10455 Dawson Drive
Lafayette, CO 80026
(303) 665-6679
(13)
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Denver Academy Photo
Denver Academy
Gr: 2-12 | 457 students
Avg. class size: 12 students
Sports: 11 | Extracurriculars: 11
Special Education School
4400 E Iliff Avenue
Denver, CO 80222
(303) 777-5161
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Fountain Valley School of Colorado Photo
Fountain Valley School of Colorado
Gr: 9-12 | 220 students
Avg. class size: 10 students
Sports: 11 | Extracurriculars: 21
6155 Fountain Valley School Road
Colorado Springs, CO 80911
(719) 391-5251
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Graland Country Day School Photo
Graland Country Day School
Gr: PK-8 | 701 students
Avg. class size: 18 students
Sports: 11 | Extracurriculars: 40
55 Clermont St
Denver, CO 80220
(303) 399-8361
(7)
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Montessori Academy of Colorado Photo
Montessori Academy of Colorado
Gr: NS-8 | 232 students
Avg. class size: 18 students
Sports: 1 | Extracurriculars: 5
Montessori School
2500 Curtis Street
Denver, CO 80205
(303) 623-2609
(16)
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Vail Mountain School Photo
Vail Mountain School
Gr: K-12 | 418 students
Avg. class size: 15 students
Sports: 11
3000 Booth Falls Road
Vail, CO 81657
(970) 476-3850
(7)
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Aspen Country Day School Photo
Aspen Country Day School
Gr: NS-8 | 295 students
Avg. class size: 14 students
Sports: 8 | Extracurriculars: 3
85 Country Day Way
Aspen, CO 81611
(970) 925-1909
(1)
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Bixby School Photo
Bixby School
Gr: PK-5 | 98 students
Avg. class size: 8 students
Sports: 1 | Extracurriculars: 4
Alternative School
4760 Table Mesa Drive
Boulder, CO 80305
(303) 494-7508
(23)
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Colorado Rocky Mountain School Photo
Colorado Rocky Mountain School
Gr: 9-12 | 165 students
Avg. class size: 12 students
Sports: 10 | Extracurriculars: 36
500 Holden Way
Carbondale, CO 81623
(970) 963-2562
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Map of Crested Butte Academy
Crested Butte Academy
Gr: 8-12 | 61 students
Avg. class size: 6 students
Sports: 11 | Extracurriculars: 5
P O Box 1180
Crested Butte, CO 81224
(970) 349-1805
(1)
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Denver Jewish Day School Photo
Denver Jewish Day School
Gr: PK-12 | 351 students
Avg. class size: 16 students
Sports: 9 | Extracurriculars: 9
Jewish
2450 S Wabash St
Denver, CO 80231
(303) 369-0663
(2)
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Denver Waldorf School Photo
Denver Waldorf School
Gr: PK-12 | 377 students
Avg. class size: 25 students
Sports: 4
Specialized Curriculum
2100 S. Pennsylvania St.
Denver, CO 80210
(303) 777-0531
(7)
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Escuela De Guadalupe Photo
Escuela De Guadalupe
Gr: PK-8 | 213 students
Sports: 4 | Extracurriculars: 6
Catholic
660 Julian St.
Denver, CO 80204
(303) 964-0816
(1)
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Map of Evergreen Country Day School
Evergreen Country Day School
Gr: NS-8 | 210 students
Avg. class size: 14 students
Sports: 11 | Extracurriculars: 5
1036 El Rancho Rd. c/o Evergreen Country Day
Evergreen, CO 80439
(303) 674-3400
(7)
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Kent Denver School Photo
Kent Denver School
Gr: 6-12 | 784 students
Avg. class size: 15 students
Sports: 20 | Extracurriculars: 19
4000 East Quincy Avenue
Englewood, CO 80113
(303) 770-7660
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The Logan School for Creative Learning Photo
The Logan School for Creative Learning
Gr: K-8 | 241 students
Avg. class size: 19 students
Sports: 5 | Extracurriculars: 7
Specialized Curriculum
1005 Yosemite Street
Denver, CO 80230
(303) 340-2444
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Frequently Asked Questions

What are the top ranked private schools belonging to Association of Colorado Independent Schools (ACIS) in Colorado?
The top ranked private schools belonging to Association of Colorado Independent Schools (ACIS) in Colorado include The Colorado Springs School, Colorado Academy, and Kent Denver School.
How many private schools belonging to Association of Colorado Independent Schools (ACIS) are located in Colorado?
33 private schools belonging to Association of Colorado Independent Schools (ACIS) are located in Colorado.
How much do private schools belonging to Association of Colorado Independent Schools (ACIS) cost in Colorado?
The average tuition cost is $28,907, which is higher than the Colorado private school average tuition cost of $14,696.
How diverse are private schools belonging to Association of Colorado Independent Schools (ACIS) in Colorado?
Colorado private schools belonging to Association of Colorado Independent Schools (ACIS) are approximately 23% minority students, which is lower than the Colorado private school average of 25%.
What percentage of private schools belonging to Association of Colorado Independent Schools (ACIS) are religiously affiliated in Colorado?
12% of private schools belonging to Association of Colorado Independent Schools (ACIS) in Colorado are religiously affiliated (most commonly Catholic and Jewish).
33
Private Schools
10,599
Students
$28,907
Avg. Tuition
23%
Students of Color
7:1
Student-Teacher Ratio

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