Upcoming Events

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    We are still figuring out how we will create and schedule the conference slots we missed due to the snow delay on Friday, November 16.  We will communicate with families when we have a plan.
    Welcome to Diamond!
    Welcome to William Diamond Middle School’s website. One of two middle schools in Lexington, Diamond offers a rich and interesting program of study in traditional academic subjects, physical education, the arts, and technology. We serve about 920 students in grades 6, 7 and 8. We are proud to participate in the METCO Program, welcoming students from Boston as well as Lexington into our Diamond community.

    This website is designed to give you access to a range of information about Diamond, and about your child’s current and future experiences here. Among other things, you will find information about departments and courses, and links to teacher web pages, as well as information about clubs and activities. We hope that you find it informative and easy to use. Welcome to Diamond! 

Clubs & Activities Schedule

  • After School Clubs & Activities Schedule

    Clubs remain open until enrollment limit is met. Students can still join a club as long as space is available. They should speak with the club advisor.


    • Homework Club: Room 1013


    • 7/8 Grade Debate: Room 243
    • Anime Club: Room 152
    • Chess Club: Room 233
    • Homework Club: Room 1013
    • IDEAS Club: Library Rotunda
    • Lex Be Friends: Room 175
    • METCO ACP: Rooms 226, 1002, 2005
    • Spanish Club: Room 147
    • Ubuntu Crew: Room 150


    • Diplomacy Club: Room 229
    • GSA: Room 238
    • Homework Club: Room 1013
    • METCO ACP: Rooms 226, 1002, 2005
    • Model UN: Room 210


    • Girls Into Math: Room 2002 (alternates on WEDS)
    • Homework Club: Room 1013
    • Magic the Gathering: Room 225
    • METCO ACP: Rooms 226, 1002, 2005
    • Student Council: Room 1005
    • Yearbook: Room 138B


Fall Book Fair

  • book fair flyer


  • Parent-Teacher Conference Registration is now OPEN

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  • Report Absences, Tardies & Dismissals via Email
    Include student name & date in subject line and reason in body of email.

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  • Fall Book Fair
    Our annual PTA-sponsored book fair will be in the Library November 28 - December 4, featuring books for all ages, pre-K to adult. Students and staff are encouraged to purchase a new book at the fair for donation to Cradles to Crayons. Book Fair hours: 7:30 a.m. - 3:30 p.m. Special evening hours on Thursday, November 29: 6:00-7:30 p.m. All proceeds will benefit the Sullivan Library.

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  • DC Trip Information 
    If you were unable to attend the informational night for this year's trip to Washington, DC you can view the presentation here and download the registration packet.

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  • Registration for the
    2018-2019 School Year
    now open

    Please visit the Central Registration website for more information. For Kindergarten Registration Information for the 2018-2019 School Year, please click here.

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  • Update your emergency contacts online
    Use your Aspen Family Portal to update your child's contact information. Click here for instructions.

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  • Report Bullying
    If you or someone you know at Diamond is being bullied or unsafe, report it online.
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  • Sentricon Info
    Click here to read more about the Sentricon Termite System installed at Diamond. While no termite activity has been noted, and no chemicals are currently being used, Massachusetts law requires us to notify parents about the treatment program in the event that the need arises. 
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