Once you have an account, you will be given a unique Teacher Code. Give this code to each of your students to allow them to create a Student account for free. They will automatically be attached to you in the system, which will "power" their account and will also allow you to monitor their progress. If you are not sure what your Teacher Code is, you can access it at any time on your Account page.
Changing your Teacher Code
From time to time, it may be necessary to change your Teacher Code. For example, if the code is disclosed to people who should not have it. You can change your Teacher Code on your Account page. Once you change your Teacher Code, the old Teacher Code will cease to function, and you will need to give your new Teacher Code to students in the future. You can change your Teacher Code whenever you want, and as often as you want.