Private School Review - Established 2003
Colorado Academy Top 3 · Highest Avg. SAT Score (CO)
Dawson School Top 3 · Highest Avg. SAT Score (CO)
Vail Mountain School

Best Colorado Private Schools Belonging to National Association of Independent Schools (NAIS)

For the 2026-27 school year, there are 40 private schools belonging to National Association of Independent Schools (NAIS) serving 12,903 students in Colorado. You can also find more schools membership associations in Colorado.
The top ranked private schools belonging to National Association of Independent Schools (NAIS) in Colorado include Colorado Academy, The Colorado Springs School, and Dawson School.
The average tuition cost is $29,802, which is higher than the Colorado private school average tuition cost of $13,855.
23% of private schools belonging to National Association of Independent Schools (NAIS) in Colorado are religiously affiliated (most commonly Christian and Catholic).

Quick Facts (26-27)

  • # Private Schools: 40

Quick Facts (26-27)

  • # Private Schools: 40

Top Ranked Private Schools Belonging to National Association of Independent Schools (NAIS) in Colorado (2026-27)

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: 29
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 | 456 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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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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Fountain Valley School of Colorado Photo
Fountain Valley School of Colorado
Gr: 8-12 | 220 students
Avg. class size: 10 students
Sports: 12 | 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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Regis Jesuit High School Photo
Regis Jesuit High School
Gr: 9-12 | 1,630 students
Avg. class size: 21 students
Sports: 21 | Extracurriculars: 3
Specialized Curriculum (Catholic)
6380 S Lewiston Way
Aurora, CO 80016
(303) 269-8000
(1)
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Vail Mountain School Photo
Vail Mountain School
Gr: K-12 | 418 students
Avg. class size: 15 students
Sports: 15
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 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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High Mountain Institute Photo
High Mountain Institute
Gr: 11-12 | 40 students
Avg. class size: 10 students
Sports: 4
Specialized Curriculum
531 County Rd 5A
Leadville, CO 80461
(719) 486-8200
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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: 20 students
Sports: 5 | Extracurriculars: 7
Specialized Curriculum
1005 Yosemite Street
Denver, CO 80230
(303) 340-2444
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Map of Mackintosh Academy Boulder
Mackintosh Academy Boulder
Gr: K-8 | 164 students
Avg. class size: 18 students
Sports: 1
6717 S. Boulder Road
Boulder, CO 80303
(303) 554-2011
(4)
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The Mcclelland School Photo
The Mcclelland School
Gr: PK-8 | 118 students
Avg. class size: 10 students
Extracurriculars: 2
415 E Abriendo Ave.
Pueblo, CO 81004
(719) 543-5271
(1)
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Montessori School Of Denver Photo
Montessori School Of Denver
Gr: NS-8 | 356 students
Avg. class size: 20 students
Sports: 4 | Extracurriculars: 1
Montessori School
1460 South Holly Street
Denver, CO 80222
(303) 756-9441
(1)
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Rivendell School Of Northern Colorado Photo
Rivendell School Of Northern Colorado
Gr: PK-5 | 142 students
Avg. class size: 20 students
Extracurriculars: 3
1800 E Prospect Rd
Fort Collins, CO 80525
(970) 493-9052
(12)
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St. Anne's Episcopal School Photo
St. Anne's Episcopal School
Gr: NS-8 | 449 students
Avg. class size: 22 students
Sports: 8 | Extracurriculars: 5
Episcopal
2701 S York Street
Denver, CO 80210
(303) 756-9481
(1)
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St. Mary's Academy Photo
St. Mary's Academy
Gr: NS-12 | 678 students
Avg. class size: 16 students
Sports: 15 | Extracurriculars: 10
Catholic
4545 South University Boulevard
Englewood, CO 80113
(303) 762-8300
(6)
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Stanley British Primary School Photo
Stanley British Primary School
Gr: PK-8 | 464 students
Avg. class size: 30 students
Sports: 8 | Extracurriculars: 7
350 Quebec Street
Denver, CO 80230
(303) 360-0803
(5)
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Map of Steamboat Mountain School
Steamboat Mountain School
Gr: K-12 | 197 students
Avg. class size: 13 students
Sports: 8
818 Oak St
Steamboat Springs, CO 80487
(970) 879-1350
(1)
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Tara Performing Arts High School Photo
Tara Performing Arts High School
Gr: 9-12 | 55 students
Specialized Curriculum
4180 19th St
Boulder, CO 80304
(303) 410-4510
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Temple Grandin School Photo
Temple Grandin School
Gr: 6-12 | 17 students
Avg. class size: 6 students
Extracurriculars: 4
Special Education School
3131 Indian Road
Boulder, CO 80301
(303) 554-7363
(2)
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Valor Christian High School Photo
Valor Christian High School
Gr: 9-12 | 1,200 students
Sports: 16 | Extracurriculars: 2
Christian
3775 Grace Blvd
Littleton, CO 80126
(303) 471-3000
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Map of Beautiful Savior Lutheran School
Beautiful Savior Lutheran School
Gr: K-6 | 40 students
Avg. class size: 10 students
Extracurriculars: 3
Other Lutheran
6995 W. 120th Avenue
Broomfield, CO 80020
(303) 469-1785
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Map of Colorado Springs Christian School
Colorado Springs Christian School
Gr: K-5 | 82 students
Christian
1003 Tamarac Pkwy
Woodland Park, CO 80863
(719) 686-0706
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Eagle Rock School & Pdc Photo
Eagle Rock School & Pdc
Gr: Inquire with school | 29 students
Alternative School
2750 Notaiah Rd
Estes Park, CO 80517
(970) 586-0600
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Map of Friends School
Friends School
Gr: PK-8 | 161 students
Avg. class size: 16 students
Alternative School
5465 Pennsylvania Ave
Boulder, CO 80303
(303) 499-1999
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Havern School Photo
Havern School
Gr: K-8 | 95 students
Avg. class size: 10 students
Sports: 1 | Extracurriculars: 16
Special Education School
4000 South Wadsworth
Littleton, CO 80123
(303) 986-4587
(4)
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Montessori Children's House Of Denver - Mayfair Photo
Montessori Children's House Of Denver - Mayfair
Gr: NS-K | 57 students
Montessori School
1467 Birch St
Denver, CO 80220
(303) 322-8324
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Show 5 more private schools in Colorado (out of 40 total schools)
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Frequently Asked Questions

What are the top ranked private schools belonging to National Association of Independent Schools (NAIS) in Colorado?
The top ranked private schools belonging to National Association of Independent Schools (NAIS) in Colorado include Colorado Academy, The Colorado Springs School, and Dawson School.
How many private schools belonging to National Association of Independent Schools (NAIS) are located in Colorado?
40 private schools belonging to National Association of Independent Schools (NAIS) are located in Colorado.
How much do private schools belonging to National Association of Independent Schools (NAIS) cost in Colorado?
The average tuition cost is $29,802, which is higher than the Colorado private school average tuition cost of $13,855.
How diverse are private schools belonging to National Association of Independent Schools (NAIS) in Colorado?
Colorado private schools belonging to National Association of Independent Schools (NAIS) are approximately 22% minority students, which is lower than the Colorado private school average of 25%.
What percentage of private schools belonging to National Association of Independent Schools (NAIS) are religiously affiliated in Colorado?
23% of private schools belonging to National Association of Independent Schools (NAIS) in Colorado are religiously affiliated (most commonly Christian and Catholic).
40
Private Schools
12,903
Students
$29,802
Avg. Tuition
22%
Students of Color
7:1
Student-Teacher Ratio

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