2009-2010 Scheduled Events
| Staff In-Service | August 31-Sept. 3 |
| Parent Orientation: Infants, Toddlers and Preschoolers | September 1 |
| Parent Orientation: Elementary, Middle and High School students | September 2 |
| First Day of School for All Students | September 8 |
| MMS Board of Trustees Meeting | September 28 |
| Seniors / Fall Trip (Leelanau Outdoor Center) | September 28 - October 2 |
| Intermediates / MMS Camp Experience | October 5-7 |
| Picture Day | October 9 |
| Annual Auction / No School | October 16 |
| Hearing and Vision Testing - Preschool | October 23 |
| Big Clean ~ Fall Cleanup (weather permitting) | October 23 |
| Hearing and Vision Testing - Elementary | October 28 |
| End of 1st Quarter: Conferences / No School | November 6 |
| Michigan Montessori Fall Workshop | November 7 |
| History Fair | November 23-25 |
| Stone Soup Day / Half Day | November 25 |
| Thanksgiving Break / No School | November 26-27 |
| MMS Board of Trustees Meeting | November 30 |
| Holiday Concert (Evening) | December 17 |
| Holiday Break: Last Day of Class / Half Day | December 18 |
| Classes Resume | January 4 |
| End of 2nd Quarter: Teacher In-Service / No School | January 15 |
| Parent Education Day | January 23 |
| MMS Board of Trustees Meeting | January 25 |
| Fathers' Night | February 2 |
| Parent Education: Moving Up Night | February 16 |
| Open House | February 17 |
| Opera Week | February 22-26 |
| Opera / Early Dismissal | February 26 |
| High School Trip: Belize with World Leadership School | February 27 – March 8 |
| Winter Break / No School | March 1-5 |
| Classes Resume | March 8 |
| Re-Enrollment Begins | March 17 |
| Quiz Bowl | March 16-17 |
| Science Fair | March 16-18 |
| End of 3rd Quarter: Conferences / No School | March 26 |
| Spring Break / No School | April 2-9 |
| Classes Resume | April 12 |
| Mothers' Night | April 13 |
| Turnoff Week | April 19-23 |
| Iowa Testing | April 19-23 |
| MMS Board of Trustees Meeting | April 26 |
| Big Spring -- Spring Clean (weather permitting) | April 30 |
| Art Auction | May 7 |
| Piano Recital | May 11 |
| Grandparents Day | May 12 |
| Senior Trip | May 17-21 |
| Celebration of the Arts | May 25 |
| High School Graduation | May 28 |
| Memorial Day / No School | May 31 |
| Year-End Conferences (Afternoon and Evening) / Half Day | June 9 |
| Family Fun Day & Toddler/Preschool Graduation | June 11 |
| Last Day of School for ALL Students | June 11 |
| Summer Camps Begin | June 21 |
*Dates of events may be subject to change at the discretion of the Head of School