The College-Level Examination Program (CLEP) gives you the opportunity to receive college credit for what you already know by earning qualifying scores on any of 36 examinations. Earn credit for knowledge you've acquired through independent study, prior course work, on-the-job training, professional development, cultural pursuits, or internships.
Defense Activity for Non-Traditional Education Support (DANTES) offers credit-by-exam programs for members of the U.S. military. A list of tests and their transcript designations for OWLS majors is here.
College Entrance Examination Board Advanced Placement Program (AP) offers college credit for high performance on the AP exams, much in the same manner as the CLEP.