Every course in Edhesive is assigned a unique section token that will be used to link an account to a specific teacher's course. This section token is entered as part of the enrollment process. Teachers can also add suffixes to section tokens in order to create course sections for multiple classes or periods. For more information, please see this page about adding multiple course sections.
From any page of your student course, you will see the unique section token for the course at the top of the page after the course name as shown below.