For the 2025-26 school year, there are 4 private schools belonging to International Baccalaureate (IB) World School serving 1,212 students in Colorado. You can also find more schools membership associations in Colorado.
The top ranked private schools belonging to International Baccalaureate (IB) World School in Colorado include Boulder Country Day, International School of Denver, and Mackintosh Academy Boulder.
The average acceptance rate is 69%, which is lower than the Colorado private school average acceptance rate of 84%.
Top Ranked Private Schools Belonging to International Baccalaureate (IB) World School in Colorado (2025-26)
School
Location
Quick Facts
4820 Nautilus Ct N
Boulder, CO 80301
(303) 527-4931
Boulder, CO 80301
(303) 527-4931
Gr: NS-8 | 293 students Avg. class size: 16 students Sports: 5 | Extracurrculars: 7 Tuition listed
7701 E 1st Pl, Unit C
Denver, CO 80230
(303) 340-3647
Denver, CO 80230
(303) 340-3647
Gr: PK-9 | 671 students Avg. class size: 13 students Sports: 7 | Extracurrculars: 32 Tuition & acceptance rate listed
6717 S. Boulder Road
Boulder, CO 80303
(303) 554-2011
Boulder, CO 80303
(303) 554-2011
Gr: K-8 | 164 students Avg. class size: 18 students Sports: 1 Tuition & acceptance rate listed
7018 S Prince St
Littleton, CO 80120
(303) 794-6222
Littleton, CO 80120
(303) 794-6222
Gr: NS-8 | 84 students Avg. class size: 13 students Extracurrculars: 4 Tuition & acceptance rate listed
Recent Articles
Transferring from Public to Private School Mid-Year: What to Expect
Considering a mid-year transfer from public to private school? Learn what to expect with admissions, academic placement, social adjustment, and financial aid to ensure a smooth transition.
A Guide to Day vs. Boarding School: Which Is Right for Your Family
Discover the key differences between day and boarding schools to determine the best fit for your child. Explore benefits, costs, lifestyle factors, and questions to help guide your family’s decision.
The A to Z of Private Schools 2025
Explore the A to Z of private schools in 2025—from admissions to tuition—offering parents and educators clear insights into today’s options.