Calendar
Derby Middle School's school day starts at 8:10AM (9:10AM on Mondays) and ends each day at 3:25PM.
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.
September 2026
Monday
Tuesday
Wednesday
Thursday
Friday
Sat/Sun
Thursday,
September
3
Friday,
September
4
Saturday,
September
5
Sunday,
September
6
Tuesday,
September
8
Wednesday,
September
9
Thursday,
September
10
Friday,
September
11
Saturday,
September
12
Sunday,
September
13
Monday,
September
14
Tuesday,
September
15
Wednesday,
September
16
Thursday,
September
17
Friday,
September
18
Saturday,
September
19
Sunday,
September
20
Monday,
September
21
Tuesday,
September
22
Thursday,
September
24
Saturday,
September
26
Sunday,
September
27
Monday,
September
28
Tuesday,
September
29
Thursday,
October
1
Friday,
October
2
Saturday,
October
3
Sunday,
October
4
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Date Range
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