<p>I looked into this once. AP exams are more widely accepted. CLEP seems more accepted at state schools, but not all of them. CLEP seems easier. A lot of pretty good schools (Texas, Wisconsin, Florida, Maryland, Ohio State, GWU) take some CLEPs though.</p>
<p>It seems like the ideal thing is to walk out of the AP test after studying like heck, and then stroll on over to the nearest CLEP center and take an exam in the same subject and get immediate gratification. Study once, test twice - very efficient. This seems especially valuable for a senior who needs the score immediately in order to bank a prerequisite so that they can register for the fall, or for someone who is not confident that they did all that well on the AP test and wants another swing while the material is still fresh.</p>
<p>Another good use seems to be with something like Economics. AP Economics typically does Micro then Macro and you take both tests in May. If you finish Micro in January, you might as well CLEP it while it’s fresh, especially if you had to study anyway for a midterm. </p>
<p>I always wondered if the Western Civ or the US History CLEPs can be passed with just Honors high school classes and a little extra studying.</p>