Calendar
Additional Calendars
- Bell Times Schedule - (school start and dismissal times)
- Religious and Public Holiday Calendar
- Staff Recognition Calendar
- 2025-26 School Calendar
- 2026-27 School Calendar
(All Mount Si High School athletic calendars are available at: www.kingcoathletics.com)
Mount Si High School Calendar
December 2025
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday, November 30
Monday, December 1
Tuesday, December 2
Wednesday, December 3
Thursday, December 4
Friday, December 5
Saturday, December 6
Sunday, December 7
Monday, December 8
Tuesday, December 9
Wednesday, December 10
Thursday, December 11
Subscribe to Calendar Alerts
Mount Si High
MSHS Fall Recognition/Winter Kick Off Assembly (PM)
-
Main Gym
Subscribe to Calendar Alerts
Snoqualmie Valley School District
Board of Directors Meeting
MSHS Library
Friday, December 12
Saturday, December 13
Sunday, December 14
Monday, December 15
Tuesday, December 16
Wednesday, December 17
Thursday, December 18
Friday, December 19
Saturday, December 20
Sunday, December 21
Monday, December 22
Tuesday, December 23
Wednesday, December 24
Thursday, December 25
Friday, December 26
Saturday, December 27
Sunday, December 28
Monday, December 29
Tuesday, December 30
Wednesday, December 31
Thursday, January 1
Friday, January 2
Saturday, January 3
Calendar & Category Legend:
- Mount Si High Mount Si High
- Snoqualmie Valley School District Snoqualmie Valley School District