Ann Arbor Open School

Ann Arbor Open School was originally constructed in 1923 as Mack Elementary School. In 2007, a major renovation and addition took place to incorporate a K-8 education, which doubled the size of the building. The original three-story masonry structure consists of a brick and stone veneer exterior and is situated on 7 acres in the northwest sector of Ann Arbor and supports Kindergarten – Grade 8.


  • Building Size88,513 sq ft
  • Land Area7 acres


All Active Complete Upcoming
  • Lighting Upgrades


    Replacement of existing lights with LED light fixtures. Classrooms to have dimmable lighting system.


  • Media Center Improvements

    In Progress

    Improvements and updates to the existing media center.



  • New Natural Playground


    A new natural playground was added. Equipment includes landform hills, permeable pavers, timber council ring, a cobble stone stream, and other elements.

  • HVAC Building Management System Upgrades


    Updated the school’s Building Management System (BMS) to the latest version including a new graphical interface and mobile, cloud-based access. The upgrades allow for better systems control, improved occupant comfort and energy efficiency.

  • Water Bottle Filling Stations


    Installation of filtered water bottle filling stations throughout the school.

  • Security Updates


    Update to security system on property.

  • Playground Shaded Trees


    Planted 12 native hardwood trees for shading of playgrounds and other outdoor environments.

  • Tennis Court Renewal


    School tennis courts were refinished.

  • Parking Lot Construction


    Repair of pavement and parking lot on school grounds.

  • New Musical Instruments


    Purchase of new musical instruments and pianos for music classrooms and auditoriums.

  • New Classroom Furniture


    New, flexible, classroom furniture was added to create a more accessible, engaging and student-centered environment.

  • Intermediate Summer Project

    Summer 2028
  • Major Project

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