Calendar
Sierra Elementary Calendar
September 2026
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday,
August
30
Tuesday,
September
1
Deaf Awareness Month (September)
All Day
Deaf Awareness Month (September)
All Day
Join 5th Gr. Band or Orchestra Meeting Night (Rental Night)
-
Arvada West High School, 11595 Allendale Dr, Arvada, CO 80004, USA
Wednesday,
September
2
Join 5th Gr. Band or Orchestra Meeting Night (Rental Night)
-
Ralston Valley High School, 13355 W 80th Ave, Arvada, CO 80005, USA
Thursday,
September
3
Friday,
September
4
Saturday,
September
5
Sunday,
September
6
Tuesday,
September
8
Wednesday,
September
9
Thursday,
September
10
Friday,
September
11
Rosh Hoshanah
All Day
Rosh Hoshanah
All Day
ROAR Day Kickoff
All Day
ROAR Day Kickoff
All Day
Monday,
September
14
Tuesday,
September
15
Wednesday,
September
16
Thursday,
September
17
Saturday,
September
19
Tuesday,
September
22
Wednesday,
September
23
Thursday,
September
24
Saturday,
September
26
Sunday,
September
27
Monday,
September
28
Tuesday,
September
29
Wednesday,
September
30
Thursday,
October
1
Student/Class Photos
All Day
Student/Class Photos
All Day
October Count
All Day
October Count
All Day
Friday,
October
2
Saturday,
October
3
Each school year calendar has a set number of teacher work days and days that require teacher and student contact according to state law (CRS 22-32-109 (n)) and District Policy IC - ICA.
Individual school calendars show more events and additional Modified Contact Days.
District 2026-27 School Year Calendars
Family Calendar (English) Calendario para el Año Escolar (Spanish) Lịch Cho Các Gia Đình Của Học Khu (Vietnamese) Окружной Календарь Для Семей (Russian)