An Educator code, or School code, is a unique code linking students' accounts to their teacher or school, it can be used to invite students to your license.
In teacher's accounts the code is provided at the top right of the account dashboard, just below the text indicating license type:
On a School or Faculty Admin dashboard the code is shown at the top left of the account dashboard in the profile area, just to the right of your profile avatar image:
In a School or Faculty license the admin account and every teacher has the same code. This ensures that any students who register using the code correctly become available to every teacher in the school.
If you are a student and you do not know the code please contact your teacher and ask him or her to provide you with the code.