At MICDS, we challenge students to become their best selves and nurture excellence in and out of the classroom.

MICDS expects all parents to contribute to their child’s educational costs to the best of their ability. The Tuition Assistance Committee considers the income and assets of both natural parents, regardless of any disclaimers.

MICDS does not discriminate on the basis of race, color, religious affiliation, national or ethnic origin, sex, gender identification, or sexual orientation in the administration of its educational policies, admissions policies, tuition assistance program, athletic program, and other school-administered programs.

At MICDS, we strive to live into our bold Mission as we cultivate students who are equipped with academic, social, and emotional intelligence. We shape future leaders who can contribute to a more positive, successful, global society by growing …

Excellence in academics at MICDS begins with our extraordinary faculty. As dedicated professionals deeply committed to engaging students both in- and outside the classroom, our teachers enjoy small class sizes, unparalleled resources, outstanding facilities, and training on the most current research in effective teaching and learning.

MICDS embarks on a five-year strategic plan that revolves around three major areas of growth and innovation: Great Teaching & Learning; Leadership and Community Engagement for the 21st Century; and Sustainability. May 11: MICDS celebrates the 150th anniversary of William Greenleaf Eliot’s founding of Mary Institute. 2010

Please contact the Admission Office at 314-995-7367 to schedule a tour or visit campus to see the MICDS community in action! Visits are currently full for our Middle and Upper Schools. Starting mid-March, the opportunity to sign up to visit our Middle and Upper Schools will be available for accepted students/families only.

Our School has a long and proud tradition of athletics and recognizes the importance athletics play in nurturing teamwork, self-discipline, perseverance, and school spirit. MICDS offers more than 48 interscholastic teams and all students, JK-12, participate in athletics and experience a thorough grounding in physical education.

Discover the potential of an MICDS education. To learn more about the application process for the 2025-26 school year, check out the Upper School application checklist below! Submit the Online Application and Application Fee

Our 100-acre MICDS campus is designed to help deliver an excellent educational experience for all students in a supportive campus community.