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Largest Colorado Private Schools

The average private school in Colorado has 160 students (2025-26).

The largest private school in Colorado is Regis Jesuit High School, with 1,682 students.

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.

Dawson School Photo - Dawson School sits on a beautiful 107-acre campus, serving families from Boulder, Longmont, Broomfield, Erie, Lafayette, Louisville, and the surrounding area

Ave Maria Catholic School Photo - Ave Maria Campus including field, school and gym

Aspen Academy Photo - What happens when 7th and 8th graders are given a chance to own and operate small businesses on campus? Aspen Academy Middle schoolers learn how to operate, market and finance fully functioning businesses on campus as part of our one-of-a-kind LiFE (Leadership, Finance and Entrepreneurship) curriculum. Students learn to lifelong skills from financial acumen to collaboration.

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. We do it with innovation and creativity and by encouraging students to think outside the box. We want students to ask "why?" and "why not?".

Springs Adventist Academy Photo - Street view from Palmer Park Blvd.

St. Elizabeth's School Photo - 8th Grade Utah Trip

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.

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.

Front Range Christian School Photo - At Front Range Christian School all students are known and loved. The mission to partner with the Christian home and Church to train and equip students to impact the world for Christ!

Humanex Academy Photo - Friends of Humanex Academy

Valor Christian High School Photo - Library

Lutheran High School Photo - Lutheran High School - Encouraging academic excellence, Nurturing growth in Christ.

Mullen High School Photo - Class of 2024 shows off their future college gear during Lasallian Heritage Week.

School Size Range: 456 1,682 Avg. School Size: 736

Frequently Asked Questions

What is the Colorado average private schools student size?

The Colorado average private schools student size is 160 for 2025-26.

What are the private schools with the largest student size in Colorado?

The top ranked private schools in Colorado include Regis Jesuit High School, Resurrection Christian School and Valor Christian High School.

What is private high school and private elementary school with the largest student size in Colorado?

The private high school with the largest student size in Colorado is Regis Jesuit High School, with a value of 1682. The private elementary school with the largest student size is Resurrection Christian School, with a value of 1622.

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