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Bell Schedules

Columbia High School operates on a 5 Period Day / Trimester schedule. Most days classes run from 8:15 am to 3:10 pm (see Regular Schedule below), but there are a variety of other bell schedules used from time to time during the year, including Early Release schedules (used most Wednesdays), a 12:05 Release (used before some holidays and on parent-teacher conference days), a 2-Hour Late start (used due to inclement weather) and an Assembly Schedule (used when school-wide events are planned during a regular schedule day).

Regular Schedule
This is the schedule most days. Classes are 72 minutes long, with 5 minute breaks. There is a longer, 10 minute break, between Pd 2 & 3.
Description / Period Start Time End Time Length
1st Period 8:15 AM 9:27 AM 72 min
2nd Period 9:32 AM 10:44 AM 72 min
3rd Period 10:54 AM 12:06 PM 72 min
Lunch 12:06 PM 12:41 PM 35 min
4th Period 12:41 PM 1:53 PM 72 min
5th Period 1:58 PM 3:10 PM 72 min
Early Release Schedule
This is the schedule used on most Wednesdays, when school dismisses at 1:40 for staff development activities. Classes are 47 minutes long, with a 30 minute Advisory period.
Description / Period Start Time End Time Length
1st Period 8:15 AM 9:02 AM 47 min
2nd Period 9:07 AM 9:54 AM 47 min
Advisory 9:59 AM 10:29 AM 30 min
3rd Period 10:39 AM 11:26 AM 47 min
Lunch 11:26 AM 12:01 PM 35 min
4th Period 12:01 PM 12:48 PM 47 min
5th Period 12:53 PM 1:40 PM 47 min
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12:05 Release
This schedule is used on parent-teacher conference days and on some days preceding a holiday break. Classes are 42 minutes each, and there is no lunch period.
Description / Period Start Time End Time Length
1st Period 8:15 AM 8:57 AM 42 min
2nd Period 9:02 AM 9:44 AM 42 min
3rd Period 9:49 AM 10:31 AM 42 min
4th Period 10:36 AM 11:18 AM 42 min
5th Period 11:23 AM 12:05 PM 42 min
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Late StartThis schedule is used when school is delayed due to snow, ice, or some other unforeseen event. School is delayed 2 hours, with classes beginning at 10:15 am. Classes are 49 minutes each, and lunch is served.
Description / Period Start Time End Time Length
1st Period 10:15 AM 11:04 AM 49 min
2nd Period 11:09 AM 11:58 AM 49 min
Lunch 11:58 AM 12:33 PM 35 min
3rd Period 12:33 PM 1:22 PM 49 min
4th Period 1:27 PM 2:16 PM 49 min
5th Period 2:21 PM 3:10 PM 49 min
Pep Assembly ScheduleThis schedule is used when an assembly occurs on a regularly scheduled (full day) school day. Classes are 66 minutes long, with a 30 minute assembly.
Description / Period Start Time End Time Length
1st Period 8:15 AM 9:21 AM 66 min
2nd Period 9:26 AM 10:32 AM 66 min
Assembly 10:32 AM 11:02 AM 30 min
3rd Period 11:12 AM 12:18 PM 66 min
Lunch 12:18 PM 12:53 PM 35 min
4th Period 12:53 PM 1:59 PM 66 min
5th period 2:04 PM 3:10 PM 66 min