I am a little confused. What is MOOC I keep hearing... I tried researching about modern states too and can someone please confirm that this makes every CLEP free? What is the catch? Are the free study materials hard and long to complete to get a voucher? And if you FAIL a CLEP, waiting 3 month to retake, do I pay again? Any tips how i one could save on CLEP and do multiple test in a day? Thank you and sorry if these have been answered. I tried searching but would appreciate your thoughts.