Class and Bell Schedule
Glenbrook South High School operates on a block schedule, blue and gold days, divided into four periods with staggered A, B and C lunch periods during the third block.
Daily Schedules
A Lunch
- Block 1 | 8-9:33 a.m. (93 Minutes)
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Block 2 | 9:42-11:12 a.m. (90 Minutes)
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Lunch A | 11:21 a,.m.-12:06 p.m. (45 Minutes)
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Block 3 | 12:06-1:36 p.m. (90 Minutes)
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Block 4 | 1:45-3:15 p.m. (90 Minutes)
B Lunch
- Block 1 | 8-9:33 a.m. (93 Minutes)
- Block 2 | 9:42-11:12 a.m. (90 Minutes)
- Block 3 | 11:21 a.m.-12:06 p.m. (45 Minutes)
- Lunch | 12:06-12:51 p.m. (45 Minutes)
- Block 3 | 12:06-1:36 p.m. (45 Minutes)
- Block 4 | 1:45-3:15 p.m. (90 Minutes)
C Lunch
- Block 1 | 8-9:33 a.m. (93 Minutes)
- Block 2 | 9:42-11:12 a.m. (90 Minutes)
- Block 3 | 11:21 a.m.-12:51 p.m. (90 Minutes)
- Lunch | 12:51-1:36 p.m. (45 Minutes)
- Block 4 | 1:45-3:15 p.m. (90 Minutes)
Late Arrival Schedule
Students have five-minute passing periods between blocks during our Late Arrival Schedule. To learn more about our Late Arrival Days, please visit the Late Arrival webpage.
A Lunch
- Block 1 | 10-11:05 a.m. (65 Minutes)
- Block 2 | 11:10 a.m.-12:10 p.m. (60 Minutes)
- Lunch | 12:15-12:50 p.m. (35 Minutes)
- Block 3B/3C – 12:50-2:10 p.m. (80 Minutes)
- Block 4 | 2:15-3:15 p.m. (60 Minutes)
B Lunch
- Block 1 | 10-11:05 a.m. (65 Minutes)
- Block 2 | 11:10 a.m.-12:10 p.m. (60 Minutes)
- Block 3A | 12:15-12:50 p.m. (35 Minutes)
- Lunch | 12:50-1:30 p.m. (40 Minutes)
- Block 3B | 1:30-2:10 p.m. (40 Minutes)
- Block 4 | 2:15-3:15 p.m. (60 Minutes)
C Lunch
- Block 1 | 10-11:05 a.m. (65 Minutes)
- Block 2 | 11:10 a.m.-12:10 p.m. (60 Minutes)
- Block 3A/3B | 12:15-1:30 p.m. (75 Minutes)
- Lunch | 1:30-2:10 p.m.
- Block 4 | 2:15-3:15 p.m. (60 Minutes)
A Lunch
- Block 1 | 8-9:22 a.m. (82 Minutes)
- Block 2 | 9:28-10:48 a.m. (80 Minutes)
- Lunch | 10:54-11:34 a.m. (40 Minutes)
- Block 3 | 11:34 a.m.-12:54 p.m. (80 Minutes)
- Block 4 | 1:-3:15 p.m.
- 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)
- Assembly 1
B Lunch
- Block 1 | 8-9:22 a.m. (82 Minutes)
- Block 2 | 9:28-10:48 a.m. (80 Minutes)
- Block 3 | 10:54-11:34 p.m. (40 Minutes)
- Lunch | 11:34 a.m.-12:14 p.m. (40 Minutes)
- Block 3 | 12:14-12:54 p.m. (40 Minutes)
- Block 4 | 1:-3:15 p.m.
- 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)
- Assembly 1
C Lunch
- Block 1 | 8-9:22 a.m. (82 Minutes)
- Block 2 | 9:28-10:48 a.m. (80 Minutes)
- Block 3 | 10:54 a.m.-12:14 p.m. (80 Minutes)
- Lunch | 12:14-12:54 p.m. (40 Minutes)
- Block 4 | 1:-3:15 p.m.
- 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)
- Assembly 1
A Lunch
- Block 1 | 8-9:18 a.m. (78 Minutes)
- Block 2 | 9:24-10:41 a.m. (77 Minutes)
- Lunch | 10:47-11:27 a.m. (40 Minutes)
- Block 3 | 11:27 a.m.-12:47 p.m. (80 Minutes)
- Block 4 | 12:53-3:15 p.m.
- Assembly 1 | 12:53-1:58 p.m. (65 Minutes), Block 4 1:58-3:15 p.m. (77 Minutes)
- Block 4 | 12:53-2:10 p.m. (77 Minutes), Assembly 2 | 2:10-3:15 p.m. (65 Minutes)
B Lunch
- Block 1 | 8-9:18 a.m. (78 Minutes)
- Block 2 | 9:24 a.m.-10:41 a.m. (77 Minutes)
- Block 3A | 10:47-11:27 a.m. (40 Minutes)
- Lunch 3B | 11:27 a.m.-12:07 p.m. (40 Minutes)
- Block 3C | 12:07-12:47 p.m. (40 Minutes)
- Block 4 | 12:53-3:15 p.m.
- Assembly 1 | 12:53-1:58 p.m. (65 Minutes), Block 4 1:58-3:15 p.m. (77 Minutes)
- Block 4 | 12:53-2:10 p.m. (77 Minutes), Assembly 2 | 2:10-3:15 p.m. (65 Minutes)
C Lunch
- Block 1 | 8-9:18 a.m. (78 Minutes)
- Block 2 | 9:24-10:41 a.m. (77 Minutes)
- Block 3 | 10:47 a.m.-12:07 p.m. (80 Minutes)
- Lunch | 12:07-12:47 p.m. (40 Minutes)
- Block 4 | 12:53-3:15 p.m.
- Assembly 1 | 12:53-1:58 p.m. (65 Minutes), Block 4 1:58-3:15 p.m. (77 Minutes)
- Block 4 | 12:53-2:10 p.m. (77 Minutes), Assembly 2 | 2:10-3:15 p.m. (65 Minutes)