Upcoming Events

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Welcome Back to School!
  • Friday, August 28: Office hours are 8:00 to 3:00, families wishing to register a new student should plan on arriving no later than 2:00.
  • Monday, August 31:  Building Closed, except those with appointments and new registrations.  The office will be closed until 9:30 and from 12:00-1:00.
  • Tuesday, September 1:       8:00-1:00 6th graders (and new 7th & 8th graders) only
  • Wednesday, September 2: All students 8:00-2:50
  • Thursday, September 3:     All students 8:00-2:50
  • Friday, September 4:          No School. Building closed.
  • Monday, September 7:       No School. Building closed.

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 780 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! 

Diamond News

Denali Students Recognized
Two 7th grade students from Team Denali were recently recognized by the 2015 Massachusetts Marine Educators Annual Marine Art Contest.
 hermit crab
Acadian Hermit Crab by Andrew T.
humpback whale
 Honorable Mention:
Humpback Whale by Evan L.



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  • Report absences via email!
    New this year: you can report absences via email!  Use the Diamond Absence email address.  Include name, date, and absence reason in the subject line.

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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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  • Not Returning to Diamond?
    Students not returning to Diamond (or Lexington Public Schools) for the 2015-2016 academic school year must complete an official withdrawal form. If you want your academic records forwarded you need to fill out a record release form.
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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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