Usually, a teacher account will not have many teachers that you need to search through. However, if you come from a large organization you may find the filter by features useful. 

1. The search feature is only available in the Pro, Business, and Ultimate paid plans for the account owner. 

2. After you log-in to the teacher account, click on the "Start Menu" and select "Teachers".

3. If you have an account with two or more teachers, you will see "Filter teachers by" followed by three input fields. Put your cursor in one of the fields and type their first name, last name, or email address. 

4. As you type, the list of teachers on the left will filter down to who you are looking for.