Read this article in Japanese (日本語版はこちら)

Below is how to connect your instructor account to a class in another school. You need the access code for the new school, which will be provided by ETS Japan or a staff member of your school

1. Sign in to your existing Instructor Account

2. Click [Enter Access Code]

3. Enter the new access code and click [Connect]

4. Make sure that the class name is correct, then click [Connect]

5. Make sure that you see the “You are now connected to ~” message and multiple classes in the list