Class and Bell Schedule
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
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BLOCK 1 |
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| PASSING PERIOD 9 minutes |
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BLOCK 2 |
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| PASSING PERIOD 9 minutes |
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| LUNCH A 11:21 a.m. - 12:06 p.m. 45 minutes |
BLOCK 3 |
BLOCK 3 11:21 a.m. - 12:51 p.m. 90 minutes |
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BLOCK 3 |
LUNCH B |
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BLOCK 3 |
LUNCH C 12:51 - 1:36 p.m. 45 minutes |
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PASSING PERIOD |
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BLOCK 4 |
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Students have nine-minute passing periods between blocks during our regular schedule.
- Block 1 | 8 - 9:33 a.m. (93 minutes)
- Block 2 | 9:42 - 11:12 a.m. (90 minutes)
- Block 3
- Lunch A
- Lunch | 11:21 a.m. - 12:06 p.m. (45 minutes)
- Block 3 | 12:06- 1:36 p.m. (90 minutes)
- Lunch B
- Block 3 | 11:21 a.m. - 12:06 p.m. (45 minutes)
- Lunch B | 12:06 - 12:51 p.m. (45 minutes)
- Block 3 | 12:06 - 1:36 p.m. (45 minutes)
- Lunch C
- Block 3 | 11:21 a.m. - 12:51 p.m. (90 minutes)
- Lunch C | 12:51 - 1:36 p.m. (45 minutes)
- Lunch A
- Block 4 | 1:45 - 3:15 p.m. (90 minutes)
Late Arrival Schedule
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Block 1 |
Frosh SRT 9:30-10:05 a.m. |
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| Peer Group / SSRT 10:05-10:40 a.m. |
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| Passing Period 5 minutes |
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Block 2 |
Frosh SRT 10:45 - 11:20 a.m. |
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| Peer Group / SSRT 11:20 a.m. - 11:55 a.m. |
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| Passing Period 5 minutes |
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| Lunch A Noon - 12:40 p.m. 40 minutes |
Block 3 |
Block 3 Noon - 1:20 p.m. 80 minutes |
FROSH SRT Noon - 12:40 p.m |
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Block 3 |
Lunch B |
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Block 3 |
Lunch C 1:20 - 2 p.m. 40 minutes |
Peer Group / SSRT 1:20-2 p.m. |
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Passing Period |
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Block 4 |
Frosh SRT 2:05 - 2:40 p.m. |
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| Peer Group / SSRT 2:40 - 3:15 p.m. |
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Students have five-minute passing periods between blocks during our late arrival schedule.
- Block 1 | 9:30-10:40 a.m. (70 minutes)
- Frosh SRT | 9:30-10:05 a.m.
- Peer Group/SSRT | 10:05-10:40 a.m.
- Block 2 | 10:45 a.m.-11:55 a.m. (70 minutes)
- Frosh SRT | 10:45-11:55 a.m.
- Peer Group/SSRT | 11:20-11:55 a.m.
- Block 3
- Lunch A
- Lunch | Noon-12:40 p.m. (40 minutes)
- Block | 12:40 - 2 p.m. (80 minutes)
- Lunch B
- Block | Noon-12:40 p.m. (40 minutes)
- Lunch | 12:50-1:20 p.m. (40 minutes)
- Block | 1:20 - 2 p.m. (40 minutes)
- Lunch C
- Block | Noon-1:20 p.m. (80 minutes)
- Lunch | 1:20-2 p.m. (40 minutes)
- FROSH SRT | Noon- 12:40 p.m
- Peer Group/SSRT | 1:20-2 p.m.
- Lunch A
- Block 4 | 2:05-3:15 p.m. (70 minutes)
- Frosh SRT | 2:05-2:40 p.m.
- Peer Group/SSRT | 2:40-3:15 p.m.
To learn more about our late arrival days, please visit the Late Arrival webpage.
Two Assembly Schedule
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Block 1 |
Frosh SRT 8-8:39 a.m. |
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| Peer Group / SSRT 8:39-9:18 a.m. |
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| Passing Period 6 minutes |
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Block 2
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Frosh SRT 9:24 - 10:02 a.m. |
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| Peer Group / SSRT 10:02 - 10:41 a.m. |
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| Passing Period 6 minutes |
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| Lunch A 10:47 - 11:27 p.m. 40 minutes |
Block 3 |
Block 3 10:47 a.m. - 12:07 p.m. 80 minutes |
FROSH SRT 10:47 - 11:27 a.m |
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Block 3 |
Lunch B |
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Block 3 |
Lunch C 12:07 - 12:47 p.m. 40 minutes |
Peer Group / SSRT 12:07 - 12:47 p.m. |
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Passing Period |
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Assembly 1 |
Block 4 12:53 - 2:10 p.m. 77 minutes |
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| Block 4 1:58 - 3:15 p.m. 77 minutes |
Frosh SRT |
Assembly 2 |
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| Peer Group / SSRT 2:26 - 3:15 p.m. |
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Students have six-minute passing periods between blocks during our two assembly-modified schedules. Students will be notified by their block four teachers of which assembly their class will attend.
- 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.
- 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.
- Block 3
- Lunch A
- Lunch | 10:47 - 11:27 p.m. (40 minutes)
- Block 3 | 11:27 a.m. - 12:47 p.m. (80 minutes)
- Lunch B
- Block 3 | 10:47 -11:27 a.m. (40 minutes)
- Lunch | 11:27 a.m. - 12:07 p.m. (40 minutes)
- Block 3 | 12:07 - 12:47 p.m. (12:07 - 12:47 p.m. (40 minutes)
- Lunch C
- Block 3 10:47 a.m. - 12:07 p.m. (80 minutes)
- Lunch | 12:07 - 12:47 p.m. (40 minutes)
- FROSH SRT | 10:47 - 11:27 a.m
- Peer Group/SSRT | 12:07 - 12:47 p.m.
- Lunch A
- Block 4
- Assembly 1
- Assembly | 12:53-1:58 p.m. (65 minutes)
- Block 4 | 1:58 - 3:15 p.m. (77 minutes)
- Assembly 2
- Block 4 | 12:53-2:10 p.m. (77 minutes)
- Assembly | 2:10-3:15 p.m. (65 minutes)
- Frosh SRT | 1:58-2:26 p.m.
- Peer Group/SSRT | 2:26-3:15 p.m.
- Assembly 1
Three Assembly Schedule
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Block 1 |
Frosh SRT 8-8:43 a.m. |
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| Peer Group / SSRT 8:43-9:22 a.m. |
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| Passing Period 6 minutes |
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Block 2 |
Frosh SRT 9:28 - 10:05 a.m. |
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| Peer Group / SSRT 10:05 - 10:48 a.m. |
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| Passing Period 6 minutes |
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| Lunch A 10:54 - 11:34 p.m. 40 minutes |
Block 3 |
Block 3 10:54 a.m. - 12:14 p.m. 80 minutes |
FROSH SRT 10:54 - 11:34 a.m |
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Block 3 |
Lunch B |
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Block 3 |
Lunch C 12:14 - 12:54 p.m. 40 minutes |
Peer Group / SSRT 12:14 - 12:54 p.m. |
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| Passing Period 6 minutes |
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| Assembly 1 1-1:45 p.m. 45 minutes |
Block 4 |
Block 4 1-2:30 p.m. 90 minutes |
Frosh SRT 1-1:45 p.m. |
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| Block 4 1:45-3:15 p.m. 90 minutes |
Assembly 2 1:45-2:30 45 minutes |
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Block 4 |
Assembly 3 |
Peer Group / SSRT 2:30-3:15 p.m. |
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Students have six-minute passing periods between blocks during our three assembly-modified schedules. Students will be notified by their block four teachers of what assembly their class will attend.
- Block 1 | 8 - 9:22 a.m. (82 minutes)
- Frosh SRT | 8-8:43 a.m.
- Peer Group/SSRT | 8:43-9:22 a.m.
- 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.
- Block 3
- Lunch A
- Lunch | 10:54-11:34 p.m. (40 minutes)
- Block 3 | 11:34 a.m.-12:54 p.m. (80 minutes)
- Lunch B
- Block 3 | 10:54-11:34 a.m. (40 minutes)
- Lunch | 11:34 a.m.-12:14 p.m. (40 minutes)
- Block 3 | 12:14-12:54 p.m. (40 minutes)
- Lunch C
- Block 3 10:54 a.m.-12:14 p.m. (80 minutes)
- Lunch | 12:07-12:54 p.m. (40 minutes)
- FROSH SRT | 10:54-11:34 a.m
- Peer Group/SSRT | 12:14-12:54 p.m.
- Lunch A
- Block 4
- Assembly 1
- Assembly | 1-1:45 p.m. (45 minutes)
- Block 4 | 1:45-3:15 p.m. (90 minutes)
- Assembly 2
- Block 4 | 1-1:45 p.m. (45 minutes)
- Assembly | 1:45-2:30 p.m. (45 minutes)
- Block 4 | 2:30-3:15 p.m. (45 minutes)
- Assembly 3
- Block 4 | 1-2:30 p.m. (90 minutes)
- Assembly | 2:30-3:15 p.m. (45 minutes)
- Frosh SRT | 1-1:45 p.m.
- Peer Group/SSRT | 2:30-3:15 p.m.
- Assembly 1