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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.

Best Colorado ²ÝÁñÉçÇø Schools Belonging to International Baccalaureate (IB) World School (2025-26)

For the 2025-26 school year, there are 4 private schools belonging to International Baccalaureate (IB) World School serving 1,225 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, Mackintosh Academy Boulder, and International School of Denver.
The average acceptance rate is 69%, which is lower than the Colorado private school average acceptance rate of 84%.

Top Ranked ²ÝÁñÉçÇø Schools Belonging to International Baccalaureate (IB) World School in Colorado (2025-26)

School
Location
Quick Facts
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.
(11)
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
International School of Denver
International School of Denver Photo
Special Program Emphasis
(9)
7701 E 1st Pl, Unit C
Denver, CO 80230
(303) 340-3647
Gr: PK-9 | 684 students Avg. class size: 13 students Sports: 7 | Extracurrculars: 32 Tuition & acceptance rate listed
Mackintosh Academy Boulder
(2)
6717 S. Boulder Road
Boulder, CO 80303
(303) 554-2011
Gr: K-8 | 164 students Avg. class size: 18 students Sports: 1 Tuition & acceptance rate listed
Mackintosh Academy Littleton
Mackintosh Academy Littleton Photo - Mackintosh Academy - Where Bright Minds Belong!
Special Program Emphasis
(4)
7018 S Prince St
Littleton, CO 80120
(303) 794-6222
Gr: NS-8 | 84 students Avg. class size: 13 students Extracurrculars: 4 Tuition & acceptance rate listed

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