If you want to the ability to give out access to the University course, go to:
Left Side Menu Bar > More Features > University > Courses
Under "SPARK University Courses" page, scroll down to "Your Online Courses" section and click the name of the course you want to check.
After clicking it, you can edit and see which tag is assigned to that course. You can also add/remove to give/remove access to the course for a student.
Once you have that tag, you need to place that tag on contacts that you want to have an access to the course. You can also remove that tag on someone that has that tag already to remove access to the course.