At the end of the school year it is a good practice to "graduate" or archive the classroom to ensure that all information is retained, but it doesn't stay in the way of new activities and new classes when the new year starts.
Parents and teachers retain their accounts on ClassTag and can use their credentials in any new classes.
Please click on three blue lines (navigation menu) at the top left corner.
Then click on a small wheel to access your profile settings.
In your profile, you will see the tab "My School & Classes", click on this option and you will be able to see the archived class under "Previous Classes".