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 850 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

  • Afterschool Clubs & Activities
    Fall Semester Schedule
    • Homework Club - Room 1004 
    • Anime Club - Room 1007 
    • Chess Club - Room 2002
    • Diamond Dispatch - Room 1005
    • Homework Club - Room 1004
    • LexBeFriends - Room 175
    • METCO Academic Coaching Program - Rooms 1001, 1002, 1003
    • D.A.T.E. Club - Room 2005
    • Homework Club - Room 1004
    • GSA - Room 238
    • Magic the Gathering - Library
    • METCO Academic Coaching Program - Rooms 1001, 1002, 1003
    • Grade 6 Debate Club - Room 1007
    • 7th/8th Grade Debate Club - Room 2007
    • Homework Club - Room 1004
    • METCO Academic Coaching Program - Rooms 1001, 1002, 1003
    • Model UN - Room 210
    • Mural Club - Room 150
    • Student Council - Room 1005
    • Yearbook Club - Room 152

Student Council Fundraiser

  • string bag

    Hurricane Relief Fundraiser

    Student Council members, with the support of the Diamond PTA,  are selling drawstring bags to raise money for classrooms in the communities affected by Hurricanes Harvey, Irma, Jose and Maria.

    The bag (pictured above) costs $10. PURCHASE BAGS

     General donations can also be made instead of purchasing bags. 

    All proceeds go directly to classrooms in need through an organization called DonorsChoose. As a group, we will choose projects posted by teachers and schools in affected areas.

    The Diamond Student Council is a group of students dedicated to making positive change, not only at Diamond, but also in the Lexington community and throughout our world. With your support, together we can make a difference!


Fall Play: The Phantom Tollbooth

    phantom tollbooth
    Friday, Nov. 3rd & Saturday, Nov. 4th at 7PM
    Diamond Auditorium

    Tickets $5 at the door

    Buy tickets at the Diamond Middle School main office or online or at the door on the nights of the shows. General admission $5 each.


    The Phantom Tollbooth is a play based on the classic children's book by Norton Juster. Many parents will remember enjoying this book when they were kids and this is a great opportunity to share the fun with their own children! We have 25 cast members and 18 stage crew members working on the show. This is a story that will appeal to all ages so bring the family! Tickets can be purchased at the main office, online or at the door on the nights of the show. $5 each general admission. Tickets go on sale on Monday, October 16th!



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

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  • Parent-Teacher Conferences:  Registration will begin on November 1, 2017

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  • Cookie Dough Fundraiser
    Don't forget! Last day for the fundraiser is Nov. 1.

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  • 8th Grade Trip to Washington, D.C. 
    April 11-13

    Registration closes on December 1. Info packets available at school office or online under Quick Links.

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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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  • NEW Homework Policy

    Click here for more information on the new homework policy approved by the Lexington School Committee.

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  • Central Registration Logo

    Central Registration opens on February 1 for incoming students Grades preK-5. Incoming students Grades 6-12 will register at their schools. For more information, visit our new Central Registration webpage.

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  • Report Bullying
    If you or someone you know at Diamond is being bullied or unsafe, report it online by using the form under Quick Links (left side of this page).
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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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