CLEP, DSST and AP tests let you earn college credit -- and cash in on savings

At the tender age of 15, my son walked onto the local college campus, his mind crammed with knowledge after two months of studying literary terms and reading tons of poetry and classic books. Some 90 minutes later, he emerged from the testing center with six college credits.

Can you say "saving money"? CLEP, DSST and Advanced Placement testing can do just that.