Community colleges in California provide this sort of thing for everything from the hard sciences to vocational training. Classes often have a mix of demograp

Community colleges in California provide this sort of thing for everything from the hard sciences to vocational training. Classes often have a mix of demographics: high school students, students using the CC as the first two years of a four year uni degree (it used to be easy to transfer to a four year state school, of which CA has about 30), professionals earning continuing education credits for certain licensed fields, career changers, veterans on the GI bill, 30/40/50 year olds getting a college degree for the first time, and even some bored old people there for fun.