Top Association of Colorado Independent Schools (ACIS) Private Schools in Colorado

All Schools
(31) All Schools
(31)  High Schools
(14) High Schools
(14)  Elementary Schools
(29) Elementary Schools
(29)  Preschools
(22) Preschools
(22) 
  • For the 2020 school year, there are 31 top private schools in Colorado belonging to the Association of Colorado Independent Schools (ACIS), serving 10,075 students.
  • The Association of Colorado Independent Schools (ACIS) is a non-profit organization dedicated to the continuous improvement of member schools by providing accreditation, professional development, and advocacy services. It is affiliated with the National Association of Independent Schools (NAIS). The independent schools in ACIS operate primarily on tuition, charitable contributions, and endowment income, not on tax or church funds. You can also find more schools membership associations in Colorado.

Top Association of Colorado Independent Schools (ACIS) Private Schools (2020)

  • School Location Grades Students
  • Aspen Academy
    Aspen Academy Photo - PreK students learning about science and nature with a classroom worm bin.
    (1)
     5859 S University Blvd
    Littleton, CO 80121
    (303)346-3500
    Grades: PK-8 | 418 students
  • The Colorado Springs School
    The Colorado Springs School Photo - Winter Wonderland at CSS!
    (1)
     21 Broadmoor Ave
    Colorado Springs, CO 80906
    (719)475-9747
    Grades: PK-12 | 362 students
  • St Mary's Academy
    St Mary's Academy Photo
    (Roman Catholic)
    (8)
     4545 S University Blvd
    Englewood, CO 80113
    (303)762-8300
    Grades: PK-12 | 688 students
  • 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.
    (Roman Catholic)
     4545 South University Boulevard
    Englewood, CO 80113
    (303)762-8300
    Grades: PK-12 | 674 students
  • Vail Mountain School
    Vail Mountain School Photo
    (4)
     3000 Booth Falls Road
    Vail, CO 81657
    (970)476-3850
    Grades: NS-12 | 430 students
  • Alexander Dawson School
    Alexander 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.
    (7)
     10455 Dawson Drive
    Lafayette, CO 80026
    (303)665-6679
    Grades: NS-12 | 509 students
  • Aspen Country Day School
    Aspen Country Day School Photo - Country Day 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
    Grades: PK-8 | 260 students
  • Boulder Country Day
    Boulder Country Day Photo - Our small class sizes provide individualized attention for each preschool student. There is truly a personal relationship that develops between the children and their teachers. Our knowledge of each child's strengths and goals helps teachers to meet individual needs. Classrooms are organized by age and are class sizes are well below State of Colorado Division of Childcare ratio guidelines.
    (3)
     4820 Nautilus Ct N
    Boulder, CO 80301
    (303)527-4931
    Grades: NS-8 | 362 students
  • Colorado Rocky Mountain School
     500 Holden Way
    Carbondale, CO 81623
    (970)963-2562
    Grades: 9-12 | 176 students
  • Crested Butte Academy
    (1)
     P O Box 1180
    Crested Butte, CO 81224
    (970)349-1805
    Grades: 8-12 | 61 students
  • Denver Academy
    Denver Academy Photo - Elementary School
    Special Program Emphasis
     4400 E Iliff Avenue
    Denver, CO 80222
    (303)777-5161
    Grades: 1-12 | 756 students
  • 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.
    Special Program Emphasis (Jewish)
     2450 S Wabash St
    Denver, CO 80231
    (303)369-0663
    Grades: NS-12 | 339 students
  • Denver Waldorf School
    Denver Waldorf School Photo - The Denver Waldorf School
    Special Program Emphasis
    (6)
     2100 S. Pennsylvania St.
    Denver, CO 80210
    (303)777-0531
    Grades: PK-12 | 380 students
  • Evergreen Country Day
     1036 El Rancho Road
    Evergreen, CO 80439
    (303)674-3400
    Grades: PK-8 | n/a students
  • Evergreen Country Day School
    Special Program Emphasis
    (7)
     1093 Swede Gulch Rd
    Evergreen, CO 80439
    (303)674-3400
    Grades: NS-8 | 205 students
  • Friends School
     5465 Pennsylvania Ave
    Boulder, CO 80303
    (303)499-1999
    Grades: NS-8 | 176 students
  • 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.
    55 Clermont St
    Denver, CO 80220
    (303)399-8361
    Grades: NS-8 | 699 students
  • Havern School
    Havern School Photo - A beautiful fall day on the Havern campus
    Special Education School
    (1)
     4000 South Wadsworth
    Littleton, CO 80123
    (303)986-4587
    Grades: K-8 | 85 students
  • Kent Denver School
    Kent Denver School Photo
    4000 East Quincy Avenue
    Englewood, CO 80113
    (303)770-7660
    Grades: 6-12 | 713 students
  • The Logan School for Creative Learning
    The Logan School for Creative Learning Photo
    Special Program Emphasis
     1005 Yosemite Street
    Denver, CO 80230
    (303)340-2444
    Grades: K-8 | 241 students
  • Mackintosh Academy Littleton
    Mackintosh Academy Littleton Photo - Mackintosh Academy Celebrates Green Ribbon Award!
    Special Program Emphasis
     7018 S Prince St
    Littleton, CO 80120
    (303)794-6222
    Grades: NS-8 | 122 students
  • The Mcclelland School
    The Mcclelland School Photo - The McClelland School has active seating in Kindergarten-2nd grade. We have stability disk in chairs at the student's desks and stability balls in the reading areas. This helps to stimulate blood flow, encourage active learning and develop core muscles.
    (1)
     415 E Abriendo Ave.
    Pueblo, CO 81004
    (719)543-5271
    Grades: PK-8 | 133 students
  • 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
    Grades: NS-8 | 331 students
  • Montessori School Of Evergreen
    Montessori School Of Evergreen Photo - From Toddler to Primary our students grow in carefully prepared academic environments led by nurturing teachers.
    Montessori School
    (11)
     6979 Highway 73
    Evergreen, CO 80439
    (303)674-0093
    Grades: NS-8 | 281 students
  • St. Anne's Episcopal School
    St. Anne's Episcopal School Photo - Campus
    (Episcopal)
     2701 S York Street
    Denver, CO 80210
    (303)756-9481
    Grades: PK-8 | 432 students
  • St. Elizabeth's School
    St. Elizabeth's School Photo - All School Photo 2016
    (Episcopal)
     2350 Gaylord St.
    Denver, CO 80205
    (303)322-4209
    Grades: K-8 | 155 students
  • Shining Mountain Waldorf School
    Shining Mountain Waldorf School Photo - Movement
    Special Program Emphasis
    (15)
     999 Violet Avenue
    Boulder, CO 80304
    (303)444-7697
    Grades: PK-12 | 296 students
  • Stanley British Primary School
    Stanley British Primary School Photo
    (4)
     350 Quebec Street
    Denver, CO 80230
    (303)360-0803
    Grades: K-8 | 458 students
  • 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)
     42605 County Road 36
    Steamboat Springs, CO 80487
    (970)879-1350
    Grades: 9-12 | 62 students
  • 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
    Grades: PK-12 | 119 students
  • Waldorf School On The Roaring Fork
    Special Program Emphasis
     16543 Old Highway 82
    Carbondale, CO 81623
    (970)963-1960
    Grades: NS-8 | 152 students
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