Select all students by clicking the checkbox in the upper right hand corner of the table
Select Reset Balances: This will ensure student accounts are fresh for next year.
Select "Delete student:" This will clear their account so that they are able to sign up to their new school next year with the same username.
Archive your class: Hide your old class so you can start fresh—don’t worry, you can still access the settings later
NOTE: If you delete your class, you will also delete all of your settings (bonuses, jobs, store items etc.)!