Private School Review - Established 2003
St. Anne's Episcopal School Photo - St. Anne's sits on 7 acres in Denver, Colorado. In this photo is the heart of our campus, the amphitheater. Each Tuesday, we gather together as a preschool through grade eight community for assembly led by our eighth grade student leaders.
St. Anne's Episcopal School

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

For the 2026 school year, there are 21 private preschools belonging to Association of Colorado Independent Schools (ACIS) serving 7,540 students in Colorado. You can also find more schools membership associations in Colorado.
The top-ranked private preschools belonging to Association of Colorado Independent Schools (ACIS) in Colorado include St. Mary's Academy, Aspen Academy, and The Colorado Springs School.
The average tuition cost is $21,852, which is higher than the Colorado private preschool average tuition cost of $12,591.
19% of private preschools belonging to Association of Colorado Independent Schools (ACIS) in Colorado are religiously affiliated (most commonly Catholic and Episcopal).

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

School
Location
Quick Facts
Aspen Academy
Aspen Academy Photo - Aspen Academy is a place where community strength and service are a priority. Students -- and parents -- create lifelong friendships.
(9)
5859 S University Blvd
Littleton, CO 80121
(303) 346-3500
Gr: NS-8 | 580 students Avg. class size: 16 students Sports: 7 | Extracurrculars: 22 Tuition & acceptance rate listed
Boulder Country Day
Boulder Country Day Photo - BCD is a proudly independent institution serving students 2 years old - 8th grade. In partnership with our outstanding faculty and committed families, we uphold the highest standard for our educational experience. Through small class sizes and innovative engagement in a supportive environment, students at BCD learn to explore their strengths and apply them to the world.
(13)
4820 Nautilus Ct N
Boulder, CO 80301
(303) 527-4931
Gr: NS-8 | 293 students Avg. class size: 16 students Sports: 5 | Extracurrculars: 7 Tuition listed
Colorado Academy
Colorado Academy Photo - Every day on campus, CA's lives the mission to create curious, kind, courageous, and adventurous learners and leaders. Our dedicated teachers offer an innovative and rigorous curriculum rooted in the liberal arts and sciences by encouraging students to think outside the box. We want students to ask "why?" and "why not?".
3800 S Pierce St
Denver, CO 80235
(303) 914-2513
Gr: PK-12 | 1,043 student Sports: 19 | Extracurrculars: 24 Tuition listed
Graland Country Day School
Graland Country Day School Photo - Graland makes learning fun! With hands-on activities that challenge students to innovate, collaborate, and persevere, Graland goes to great lengths to ensure learning is a joyful, curiosity-driven adventure.
(7)
55 Clermont St
Denver, CO 80220
(303) 399-8361
Gr: PK-8 | 701 students Avg. class size: 18 students Sports: 11 | Extracurrculars: 39 Tuition listed
Montessori Academy of Colorado
Montessori Academy of Colorado Photo - MAC`s Elementary School offers an unparalleled opportunity for children to thrive by combining a progressive Montessori pedagogy, a dynamic experiential program, strong academics, social-emotional support, and a robust enrichment program. The MAC Elementary experience empowers students to reach their own personal potential and develop the confidence and capabilities to positively impact their world.
Montessori School
(16)
2500 Curtis Street
Denver, CO 80205
(303) 623-2609
Gr: NS-8 | 287 students Avg. class size: 18 students Sports: 1 | Extracurrculars: 6 Tuition & acceptance rate listed
Aspen Country Day School
Aspen Country Day School Photo - Aspen Country Day School enjoys a beautiful forested campus on Castle Creek. Ponds and mountains provide an ideal natural environment for learning in the outdoors. The entire campus was redone and reopened in 2016 with state-of-the-art classroom buildings that inspire learning and foster creativity.
(1)
85 Country Day Way
Aspen, CO 81611
(970) 925-1909
Gr: NS-8 | 295 students Avg. class size: 14 students Sports: 8 | Extracurrculars: 3 Tuition listed
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)
21 Broadmoor Ave
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
Denver Jewish Day School
Denver Jewish Day School Photo
(Jewish)
(2)
2450 S Wabash St
Denver, CO 80231
(303) 369-0663
Gr: PK-12 | 351 students Avg. class size: 16 students Sports: 9 | Extracurrculars: 9 Tuition listed
Denver Waldorf School
Denver Waldorf School Photo - The Denver Waldorf School
Special Program Emphasis
(7)
2100 S. Pennsylvania St.
Denver, CO 80210
(303) 777-0531
Gr: PK-12 | 377 students Avg. class size: 25 students Sports: 4 Tuition & acceptance rate listed
Escuela De Guadalupe
Escuela De Guadalupe Photo - Escuela de Guadalupe is a private, dual-language, Catholic school of excellence for grades Preschool through 8th. We serve a diverse community of families from around the Denver metro area, with the goal of accepting all students who are committed to an excellent education, no matter their family's financial situation. We teach all classes in Spanish and English.
(Catholic)
(1)
660 Julian St.
Denver, CO 80204
(303) 964-0816
Gr: PK-8 | 216 students Sports: 4 | Extracurrculars: 6 Tuition listed
Evergreen Country Day School
(7)
1036 El Rancho Rd. c/o Evergreen Country Day
Evergreen, CO 80439
(303) 674-3400
Gr: NS-8 | 210 students Avg. class size: 14 students Sports: 11 | Extracurrculars: 5 Tuition & acceptance rate listed
Friends School
Alternative School
5465 Pennsylvania Ave
Boulder, CO 80303
(303) 499-1999
Gr: PK-8 | 161 students Avg. class size: 16 students
The Mcclelland School
The Mcclelland School Photo - The McClelland School's 3rd and 4th grade students participate in activities such as a "book tasting", where they are able to review new genres of books that they may not have read before and share them with their classmates.
(1)
415 E Abriendo Ave.
Pueblo, CO 81004
(719) 543-5271
Gr: PK-8 | 86 students Avg. class size: 10 students Extracurrculars: 3 Tuition listed
Montessori School Of Denver
Montessori School Of Denver Photo - Montessori School of Denver's Cinco de Mayo Celebration. MSD Students celebrate with song, dance, and a cultural festival.
Montessori School
1460 South Holly Street
Denver, CO 80222
(303) 756-9441
Gr: NS-8 | 356 students Avg. class size: 20 students Sports: 4 | Extracurrculars: 1 Tuition & acceptance rate listed
Rivendell School Of Northern Colorado
Rivendell School Of Northern Colorado Photo
(12)
1800 E Prospect Rd
Fort Collins, CO 80525
(970) 493-9052
Gr: PK-5 | 173 students Avg. class size: 20 students Extracurrculars: 4 Tuition & acceptance rate listed
St. Anne's Episcopal School
St. Anne's Episcopal School Photo - St. Anne's sits on 7 acres in Denver, Colorado. In this photo is the heart of our campus, the amphitheater. Each Tuesday, we gather together as a preschool through grade eight community for assembly led by our eighth grade student leaders.
(Episcopal)
(1)
2701 S York Street
Denver, CO 80210
(303) 756-9481
Gr: NS-8 | 434 students Avg. class size: 22 students Sports: 7 | Extracurrculars: 5 Tuition listed
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)
(6)
4545 South University Boulevard
Englewood, CO 80113
(303) 762-8300
Gr: NS-12 | 678 students Avg. class size: 16 students Sports: 15 | Extracurrculars: 10 Tuition listed
Shining Mountain Waldorf School
Shining Mountain Waldorf School Photo - Movement
Special Program Emphasis
(17)
999 Violet Avenue
Boulder, CO 80304
(303) 444-7697
Gr: PK-12 | 200 students Avg. class size: 20 students Sports: 4 | Extracurrculars: 6 Tuition & acceptance rate listed
Stanley British Primary School
Stanley British Primary School Photo
(5)
350 Quebec Street
Denver, CO 80230
(303) 360-0803
Gr: PK-8 | 464 students Avg. class size: 30 students Sports: 8 | Extracurrculars: 7 Tuition listed
Telluride Mountain School
Telluride Mountain School Photo - Winter programs are designed around snow, winter ecology, avalanche education and include a full-season, on-mountain ski and snowboard Ski P.E. program that accommodates all skill levels, from the recreational skier/snowboarder to the aspiring competitor.
200 San Miguel River Dr
Telluride, CO 81435
(970) 728-1969
Gr: PK-12 | 120 students Avg. class size: 8 students Sports: 4 Tuition listed
Waldorf School On The Roaring Fork
Special Program Emphasis
16543 Old Highway 82
Carbondale, CO 81623
(970) 963-1960
Gr: PK-8 | 179 students Avg. class size: 15 students Tuition & acceptance rate listed

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