U.S. attorneys typically earn CLE credits by completing legal training presented by experienced attorneys. The training may cover both legal theory and practical experiences in legal practice. Competency testing is not usually required in order for attorneys to earn CLE credits through legal training. Classroom training materials can be extensive and may represent the most current and advanced thinking available on a particular legal subject. Oftentimes, a portion of CLE credits may be earned through reading and other self-study. In recent years, many jurisdictions now allow attorneys to earn CLE credits as part of distance education courses taken on-line or by listening to audio downloads.