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Calendar

2026-27 School Calendar (BOE Approved 9/25/25) (one-page version for printing)
2027-28 School Calendar (BOE Approved 9/24/26) (one-page version for printing)

Date Range
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October 2026
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Sunday, September 27
Monday, September 28
CMS Pattern 1
Tuesday, September 29
CMS Pattern 1
Wednesday, September 30
CMS Marking Period 1 Midpoint
CMS Pattern 2
Thursday, October 1
CMS Free to be Me Club
District Calendar High School Open House - Grades 9 and 12
CMS Pattern 1
CMS Science Club
Friday, October 2
CMS Pattern 2
Board of Education Calendar Board of Education Budget Committee Meeting
Havemeyer Building with Virtual Option
Saturday, October 3
Sunday, October 4
Monday, October 5
CMS Pattern 2
Tuesday, October 6
District Calendar High School Open House - Grades 10 and 11
CMS Pattern 1
CMS Knitting Club
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Media Center
Wednesday, October 7
CMS Pattern 2
Board of Education Calendar Board of Education Policy Governance Committee Meeting
Virtual Setting
Thursday, October 8
CMS Free to be Me Club
CMS Pattern 1
CMS Science Club
Board of Education Calendar Board of Education Retreat
Havemeyer Building
Friday, October 9
CMS Pattern 2
Saturday, October 10
Sunday, October 11
Monday, October 12
District Calendar Columbus Day - SCHOOLS OPEN
CMS Pattern 1
Tuesday, October 13
CMS Pattern 1
CMS Knitting Club
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Media Center
Wednesday, October 14
CMS Pattern 2
CMS Student Council
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Room 2204
Thursday, October 15
CMS Free to be Me Club
CMS Pattern 1
CMS Science Club
Friday, October 16
CMS Pattern 2
Saturday, October 17
Sunday, October 18
Monday, October 19
Subscribe to Calendar Alerts CMS Pattern 2
Tuesday, October 20
Subscribe to Calendar Alerts CMS Pattern 1
Subscribe to Calendar Alerts District Calendar Teacher Collaboration Day - Early Release
Subscribe to Calendar Alerts CMS Knitting Club
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Media Center
Wednesday, October 21
Subscribe to Calendar Alerts CMS Pattern 2
Thursday, October 22
Subscribe to Calendar Alerts CMS Free to be Me Club
Subscribe to Calendar Alerts CMS Pattern 1
Subscribe to Calendar Alerts CMS Science Club
Subscribe to Calendar Alerts Board of Education Calendar Board of Education Business Meeting
Cos Cob School
Friday, October 23
Subscribe to Calendar Alerts CMS Pattern 2
Saturday, October 24
Sunday, October 25
Monday, October 26
Subscribe to Calendar Alerts CMS Pattern 1
Tuesday, October 27
Subscribe to Calendar Alerts CMS Pattern 1
Subscribe to Calendar Alerts CMS Knitting Club
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Media Center
Wednesday, October 28
Subscribe to Calendar Alerts CMS Pattern 2
Thursday, October 29
Subscribe to Calendar Alerts CMS Free to be Me Club
Subscribe to Calendar Alerts CMS Pattern 1
Subscribe to Calendar Alerts CMS Science Club
Friday, October 30
Subscribe to Calendar Alerts CMS Pattern 2
Saturday, October 31

Calendar & Category Legend:

  • Board of Education Calendar Board of Education Calendar
  • District Calendar
    • District Calendar District Calendar
    • Closings/Delays Closings/Delays
    • Greenwich High School Greenwich High School
    • Secondary Schools Review Committee Secondary Schools Review Committee
    • Schools Resume Schools Resume
  • CMS Calendar
    • CMS CMS