Many colleges and universities offer free tuition for retired people. The starting age for the programs vary, but some start at 60. Today's find is Go-60, which is a program of Penn State University. It is available at Main Campus and at the satellite campuses. As always, the course offerings vary across campuses. Links:
General Program information: http://ceup.psu.edu/state-college/go-60-program
Abington Campus program: http://abington.psu.edu/go-60
Some programs, such as Graphic Design, are only offered at Main Campus.