To assign a group of students to a new class, follow these steps:
Click Administration
Sign in to your School or District Administrator account and select Administration from the top tabs.
Use the drop-down filters
You can use the Grade and Class filters to narrow your list of students to the group you would like to assign to a new class. If the students you need to assign to a new class are currently not in the same grade or class, then you would not use the filters. You would manually locate the student accounts and select them.
Select the students
Use the Select All check box at the top of the left column to select all of the students in the list. After you have selected the students, click the Assign to Class button.
Select the new class
In the pop up window, choose the new class to assign the students to.
Click Assign
Select Assign to confirm the addition. The selected students are now assigned to the new class.