Although students graduate from an educational institution there is no reason to close the computerized system to them. It is possible to allow them to maintain their access to maintain relationship, monitor fellow students or other opportunities for education. Educational institutions often operate commercial services and alumni associations to utilize the forces of graduates. It is also possible to advertise for teachers or sell individual courses.
My clubs system may be used as a basis for the alumni club and members can be charged for membership through the university billing system. If a club system is in use, a summary appears on the users front page that shows the clubs in which he is listed:

From the system control it’s possible to see an overview of all the school clubs and maintain them.