Change column positions

To change the position of a single column, tap and hold on that column's header, drag and drop it to the desired position

Insert a column at any position

Tap on the header of the reference column and then on the quick action button below
You will be able to insert columns before or after the selected column

Move and edit columns in bulk

You can move multiple columns at once by selecting them first, then Cut, selecting the target position and Paste

Frozen columns

A frozen column will always be shown next to the students’ names.
This will help you keep important columns in view while scrolling your gradebook.
Tap on Tools > Columns > Drag and drop your columns into the 'Frozen columns' zone next to the 'Student name'.