Time and Rotation Schedules

Chatham High School uses a rotating modified-block schedule.  Daily periods are 55 minutes, and science labs are embedded in the 54-minute common lunch.  Eight periods comprise the full schedule, but only six periods meet each day.  The rotation of the four-day cycle is illustrated below:

Day 1

Day 2

Day 3

Day 4

1

2

3

4

2

3

4

1

3

4

1

2

Lunch/Science Labs

7

8

5

6

6

7

8

5

5

6

7

8

Rotation Calendar 2024-2025

Rotation Calendar

Daily Bell Schedule - Regular Day

Daily Schedule

1

8:20

9:15

2

9:19

10:14

3

10:18

11:13

LAB

11:13

11:39

LUNCH

11:13

12:03

LAB

11:41

12:07

4

12:07

1:02

5

1:06

2:01

6

2:05

3:00

Half-Day Schedule

HALF-DAY SCHEDULE

40-MINUTE BLOCKS-NO LUNCH BREAK

1

8:20

8:57

2

9:01

9:38

3

9:42

10:19

4

10:23

11:00

5

11:04

11:41

6

11:45

12:22

Delayed Opening

DELAYED OPENING

90 MINUTE DELAY: 40 MINUTE BLOCKS

 

 

 

1

9:50

10:30

2

10:34

11:14

3

11:18

11:58

LAB

11:58

12:22

LUNCH

11:58

12:48

LAB

12:28

12:52

4

12:52

1:32

5

1:36

2:16

6

2:20

3:00

Period 1-8 Full Day

PERIOD 1-8 FULL DAY

Period 1

8:20

9:00

Period 2

9:04

9:44

Period 3

9:48

10:28

Period 4

10:32

11:12

Lab

11:12

11:38

LUNCH

11:12

12:04

Lab

11:42

12:08

Period 5

12:08

12:48

Period 6

12:52

1:32

Period 7

1:36

2:16

Period 8

2:20

3:00

Period 1-8 Half-Day

PERIOD 1-8 HALF-DAY

Period 1

8:20

8:46

Period 2

8:50

9:17

Period 3

9:21

9:48

Period 4

9:52

10:19

Period 5

10:23

10:50

Period 6

10:54

11:21

Period 7

11:25

11:52

Period 8

11:56

12:22

Period 1-8 Delayed Opening

PERIOD 1-8 DAY

DELAYED OPENING WITH LUNCH

Period 1

9:50

10:19

Period 2

10:23

10:52

Period 3

10:56

11:25

Period 4

11:29

11:58

LUNCH

11:58

12:48

Period 5

12:52

1:21

Period 6

1:25

1:54

Period 7

1:58

2:27

Period 8

2:31

3:00

School Cancellation Procedures