School Facts

“Good team work and collaboration aren't things that just happen. You have to intentionally build and scaffold experiences for students so they can grow their capacity in these areas.”

Scott McClintock, Fourth-Fifth-Sixth Grade Science

Our Community

  • Independent, coeducational, not-for-profit, serving students age 18 months through Sixth Grade
  • Founded in 1962 as the first Montessori school in St. Louis
  • 35 faculty, staff, and administration
  • 67% of our faculty hold advanced degrees
  • Average teaching experience = 17 years
  • 150 students age 18 months through Sixth Grade
  • Student/teacher ratio = 4:1 in Toddler, 8:1 in Preschool-Sixth Grade
  • 36% religious and ethnic student diversity
  • Families hail from more than 30 zip codes in the St. Louis area


  • Independent Schools Association of the Central States (ISACS)
  • National Association of Independent Schools (NAIS)
  • American Montessori Society (AMS)
  • Independent Schools of St. Louis (ISSL)


  • 8.94 acres at 1100 White Road, Chesterfield, MO 63017

Program Hours

  • Full-day Toddler, Preschool, Kindergarten-Sixth Grade: 8-8:15 a.m. to 3:15-3:30 p.m.
  • Half-day Toddler and Preschool: 8-8:15 a.m. to 11:15 a.m.
  • Before- and After-Hours care available

Standardized Testing

CDS uses the Educational Records Bureau Comprehensive Testing Program (CTP 4) to assess efficacy of curriculum and relative student performance. The following graph compares the performance of our students with national and independent school norms over a three-year period, from 2014-2016.

Our students consistently outperform their independent school peers on standardized tests, positioning them for success in applying to the secondary schools of their choice.

Chesterfield Day Schools' CTP-4 Scores vs. Independent School Norms
Three-Year Average (2014-2016)

Secondary School Placement

Our start-to-finish premier preparation yields graduates who are highly sought after by area secondary schools. According to administrators at these schools, what makes a CDS student unique and coveted are the following characteristics:

  • strong fundamental and 21st century skills
  • self-advocacy
  • high level of executive function
  • well roundedness
  • the ability to pick up on and absorb ideas/concepts that are introduced

      All of the feedback we receive from area secondary schools indicates that we are preparing CDS students well to go on to the schools of their choosing — and that they are not only quickly fitting into these schools but leading others, too.

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