Absolute cheapest way to "test out" and earn credits?

[Maniac Craniac]

Clovis Community College courses are $225 for 6 credits (the price goes up astronomically if you take more than 6 credits per semester). That evens out to about the same as a CLEP. However, since it is tuition, you can apply it to tax credits (HOPE, Lifetime Learning, American Opportunity) or you might be able to find a way to deduct it from your income on your tax return. Either way, it ends up being less expensive than CLEP by far. The trade-offs are that a course takes more time and that you have to wait for your tax return before you see the benefit of doing it this way.