As an admin you can permanently cancel your schools account at any time. Simply follow these steps...
1) Click the "Settings" option.
2) Click "Delete School Account"
3) Confirm that you want to delete your schools account and data.
NOTE: Canceling your schools account will delete all teachers, students and data. Additionally it will instantly cancel all premium features for which you are subscribed. We do not offer refunds for any unused time on purchased plans.