The College Accelerator Edition includes two proctored exams per 30 days. Your 2 available exams reset on your billing date. Additional exams are available to purchase for $70 per exam. You can take up to 5 exams in a 30 day period. 

Passing two exams is equivalent to earning 6 transferable college credits. If for some reason you don't meet the 70% minimum score to pass a course, you can retake it again in 3 days.