Deleting data from the grade book
In order to delete a student, a column, a resource, a cell , a tab or a class, tap&hold on that element and Erase
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If you'd like to do that in bulk, tap on the Tools icon (top bar) / and either choose Students, Columns, Tabs or Resources.
Select the items to erase and tap on the Bin icon located in the bottom left corner
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Erasing Students, Columns and Tabs will move them automatically into the Recycle bin on the main screen where you can restore those elements if you erase them by mistake.
Restore grade book data: Students, tabs, columns, classes and grade types
Tap on Main menu > Trash
To restore: select items , tap on Restore button.