For Mac OS users, there is a system setting that may not allow you to tab onto several types of elements in a web page. To change this setting:
0 Period - 7:45-8:10
1st Period - 8:14-8:59 Science
2nd Period - 9:03-9:48 Science
3rd Period - 9:52-10:37 Conference
4th Period - 10:41-11:26 Eduphoria
7/8 Lunch - 11:30-12:15
5th Period - 12:19-1:04 Health
6th Period - 1:08-1:53 Science
7th Period- 1:57-2:42 Science
Break - 2:42-2:51
8th Period - 2:55-3:40 Science