Bell Schedules

Glenbrook South High School operates on a blue and gold day block schedule divided into four periods. A, B, and C lunch periods are staggered during the third block.

Daily Schedules

Regular Schedule
Late Arrival Schedule
Two Assembly Schedule
Three Assembly Schedule

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Regular Schedule

BLOCK 1 8 - 9:33 a.m. 93 minutes
PASSING PERIOD 9 minutes
BLOCK 2 9:42 - 11:12 a.m. 90 Minutes
PASSING PERIOD 9 minutes
LUNCH A 11:21 a.m. - 12:06 p.m. 45 minutes	BLOCK 3 11:21 a.m. - 12:06 p.m. 45 minutes	BLOCK 3 11:21 a.m. - 12:51 p.m. 90 minutes
BLOCK 3 12:06 - 1:36 p.m. 90 minutes	LUNCH B 12:06 - 12:51 p.m. 45 minutes
	BLOCK 3 12:51 - 1:36 p.m. 45 minutes	LUNCH C 12:51 - 1:36 p.m. 45 minutes
PASSING PERIOD 9 minutes
BLOCK 4 1:45 - 3:15 p.m. 90 Minutes

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Late Arrival Schedule

On a "Late Arrival Day," the school day begins at 9:30 a.m for students. We follow a shortened school day schedule and school buses run on a 90-minute delay.

While our students arrive later, staff begin work at their regular time. During this time, staff participate in professional learning time by collaborating with one another, working on long-term planning, or participating in professional learning opportunities.

Block 1

9:30 -10:40 a.m.

70 minutes

Passing Period

5 minutes

Block 2

10:45 - 11:55 a.m.

70 minutes

Passing Period

5 minutes

Lunch A

12 - 12:40 p.m.

40 minutes

Block 3

12 - 12:40 p.m.

40 minutes

Block 3

12 - 1:20 p.m.

80 minutes

Block 3

12:40 - 2 p.m.

80 minutes

Lunch B

12:40 - 1:20 p.m.

40 minutes

Block 3

1:20 - 2 p.m.

40 minutes

Lunch 3

1:20 - 2 p.m.

40 minutes

Passing Period

5 minutes

Block 4

2:05 - 3:15 p.m.

70 minutes

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Two Assembly Schedule

Block 1 8 - 9:18 a.m. 78 minutes					Frosh SRT 8-8:39 a.m.
					Peer Group / SSRT 8:39-9:18 a.m.
Passing Period 6 minutes
Block 2 9:24 a.m. - 10:41 a.m. 77 minutes					Frosh SRT 9:24 - 10:02 a.m.
					Peer Group / SSRT 10:02 - 10:41 a.m.
Passing Period 6 minutes
Lunch A 10:47 - 11:27 p.m. 40 minutes	Block 3 10:47 -11:27 a.m. 40 minutes		Block 3 10:47 a.m. - 12:07 p.m. 80 minutes		FROSH SRT 10:47 - 11:27 a.m
Block 3 11:27 a.m. - 12:47 p.m. 80 minutes	Lunch B 11:27 a.m. - 12:07 p.m. 40 minutes
	Block 3 12:07 - 12:47 p.m. 40 minutes		Lunch C 12:07 - 12:47 p.m. 40 minutes		Peer Group / SSRT 12:07 - 12:47 p.m.
Passing Period 6 minutes
Assembly 1 12:53-1:58 p.m. 65 minutes				Block 4 12:53 - 2:10 p.m. 77 minutes
Block 4 1:58 - 3:15 p.m. 77 minutes		Frosh SRT 1:58 - 2:26 p.m.		Assembly 2 2:10 - 3:15 p.m. 65 minutes
		Peer Group / SSRT 2:26 - 3:15 p.m.

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Three Assembly Schedule

Block 1 8 - 9:22 a.m. 80 minutes			Frosh SRT 8-8:43 a.m.
			Peer Group / SSRT 8:43-9:22 a.m.
Passing Period 6 minutes
Block 2 9:28 a.m. - 10:48 a.m. 80 minutes			Frosh SRT 9:28 - 10:05 a.m.
			Peer Group / SSRT 10:05 - 10:48 a.m.
Passing Period 6 minutes
Lunch A 10:54 - 11:34 p.m. 40 minutes	Block 3 10:54 -11:34 a.m. 40 minutes	Block 3 10:54 a.m. - 12:14 p.m. 80 minutes	FROSH SRT 10:54 - 11:34 a.m
Block 3 11:34 a.m. - 12:54 p.m. 80 minutes	Lunch B 11:34 a.m. - 12:14 p.m. 40 minutes
	Block 3 12:14 - 12:54 p.m. 40 minutes	Lunch C 12:14 - 12:54 p.m. 40 minutes	Peer Group / SSRT 12:14 - 12:54 p.m.
Passing Period 6 minutes
Assembly 1 1-1:45 p.m. 45 minutes	Block 4 1-1:45 p.m. 45 minutes	Block 4 1-2:30 p.m. 90 minutes	Frosh SRT 1-1:45 p.m.
Block 4 1:45-3:15 p.m. 90 minutes	Assembly 2 1:45-2:30 45 minutes
	Block 4 2:30-3:15 p.m. 45 minutes	Assembly 3 2:30-3:15 p.m 45 minutes	Peer Group / SSRT 2:30-3:15 p.m.