In order to assign more than one student to a new grade you can use the Bulk Edit feature. This is particularly useful at the end of the school year when you need promote many students to the next grade.
To use the Bulk Edit feature to promote multiple students to a new grade follow the steps below.
Click your name and then click School.
Use the Grade filter to narrow your list of students to the group you would like to assign to a new grade.
Use the Select All check box at the top of the left column to select all of the students in the list.
Click the Assign to Grade button in the left column.
Select the new grade for the selected students.
The selected students have now been assigned to their new grade level.