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:
This window lists all the subjects available to use when creating a new assignment in Grade Book. You may add your own subjects with the +New button at the top right of the screen if the district-created subjects do not meet your needs. You may also edit teacher-created subjects using the edit button in the upper left of the screen. There is no editing of District Wide subjects. Note: the edit button toggles between edit and hide. Hide simply means to hide the ability to edit teacher-created subjects, or make all fields non-editable.