The document outlines a school bell schedule with 9 periods throughout the day. Period 1 runs from 7:42 to 8:23, followed by periods 2 through 8 at varying times, with period 9 concluding from 1:53 to 2:34. A 3 minute HR period occurs from 9:09 to 9:12 between periods 2 and 3.

1. Period Time
1 7:42~8:23
2 8:28~9:09
(H.R.) 9:09~9:12
3 9:17~9:58
4 10:03~10:44
5 10:49~11:30
6 11:35~12:16
7 12:21~1:02
8 1:07~1:48
9 1:53~2:34
Bell Schedule I