Calendar
Derby High School's school day starts at 7:55AM (8:55AM on Mondays) and ends each day at 3:10PM.
Why do we have Late Start Mondays?
Late Start Mondays give teachers dedicated time for Professional Learning Time (PLTs). During this time, educators collaborate on curriculum, instructional strategies, review student data, and receive training on technology and other tools — all to better support student learning.
December 2025
Monday
Tuesday
Wednesday
Thursday
Friday
Sat/Sun
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
Friday,
December
12
Monday,
December
15
Tuesday,
December
16
Wednesday,
December
17
Thursday,
December
18
Friday,
December
19
Saturday,
December
20
Sunday,
December
21
Friday,
December
26
Saturday,
December
27
Sunday,
December
28
Friday,
January
2
Saturday,
January
3
Sunday,
January
4
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Date Range
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