\label{Course_Deleting}
A course can not be ``deleted'' from a LON-CAPA server. Courses occupy
very little storage space, and an inactive course is not a burden on
the system. On the other hand, allowing data to be permanently deleted
could lead to serious accidental data loss.

You \emph{can} expire the roles\index{roles, expiring} for all users in
the course. For example, when you use 
\includegraphics[width=0.03\paperwidth]{list-add}
\textbf{Add/Modify a Student} or 
\includegraphics[width=0.03\paperwidth]{edit-redo}
\textbf{Add/Modify a Course User} 
to put students or Course Coordinators into a course,
you can set an ending date for those roles. When the ending
date\index{roles, end date} is reached, the role associated with the
course will not be accessible to the user any more.

If you view the \textbf{User Roles} screen, you will see a checkbox at the
top that allows you to display all roles. If you check that box and
click the \fbox{Update display} button, you can see your current and 
expired roles, if any.

It is a good idea to get into the habit of setting end dates for all
courses.