I have found that most colleges that accept CLEP allow CLEP subjects tests to be taken while the student is in college. Many have a limit on how many CLEP credits they'll accept in total. Policies vary. Check with your school.
Some schools charge to transcript the credits. Some schools have separate, departmental essays that must be completed in addition to the CLEP for credit.
School policies concerning CLEP are so varied that it is critical to check with your college before taking the tests!
My son's college encourages CLEP, has a testing center on campus, and doesn't charge to transcript credits. It's been a money-saver for us and a time saver for him.
For more information about CLEP, see
Office Solutions - CLEP FAQs