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MSS Calendar

Important Dates

MSS generally follows the College of San Mateo academic calendar, with a longer thanksgiving holiday and late-winter break.

Our concurrently enrolled students will find additional relevant dates on the CSM website.

  • First Day of School
    August 17, 2022
  • Labor Day
    September 5
  • Columbus Day
    October 12
  • Veterans Day
    November 11
  • Thanksgiving Break
    November 21–25
  • Winter Break
    December 17–January 16, 2023
  • Martin Luther King, Jr. Day
    January 16
  • Presidents’ Week
    February 20–24
  • Spring Break
    April 3–7
  • Last Day of School / Graduation
    May 26
  • Memorial Day
    May 29


Please refer to the College Board site for current dates and information.


Please refer to the ACT site for current dates and information.