The classes in Sdui are usually preset for each student. If the class is not correct, the Sdui contact person can assign the correct class. To check the class assignment, go to the Sdui settings (drop-down menu in the header bar at the top right). Select the top tile "Change my profile, school data & passwords".

The class assignment can be seen under the heading "Class". Click on the pencil next to the class to change it.