You can view the enrollments for a user in your account.
In Global Navigation, click the Admin menu [1], then click the name of the account [2].
Find A User on search people. Type in the user's name [1].
After clicking Go, you will see the search results. To access that user's details, click the name link.
If you scroll down the page, you will see the Enrollments section. Here you can see the user's enrollments, if they are active or not, and what role they are.