Due to construction at the Hancock Street rotary, visitors are encouraged to use the driveway on the Sedge Road side of the building.
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! 


  • Team Letter   On August 15 we will be mailing home letters informing students of their homeroom and team placements.  Sixth graders will receive a supply list in this mailing.

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  • Graphing Calculators for 8th graders: Rising 8th graders (class of 2019) are urged to purchase a Texas Instruments TI-83 or TI-84 graphing calculator.   Click here for more information.
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  • Report Bullying
    If you or someone you know at Diamond is being bullied, 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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