Hi Tina,

If they can access the Teacher Dashboard from their account, then it seems to be the case that they have the teacher functionality enabled on their account. To disable this, they will need to log in and go to their Account Settings page. Under the "Roles" section, they will need to uncheck the box next to the teacher role and save the changes.

Please note that all accounts are able to access the learner, teacher, and parent functionality. i.e. there's no way to prevent them from accessing this functionality, but they can choose whether or not they would like to see those features on their account.

I hope this helps! Please let me know if you have any additional questions!