The "AV" rating is Martindale-Hubbell's preeminent rating, granted only to the top 3% of lawyers for legal expertise and overall professional excellence.

The Martindale-Hubbell Peer Review Ratings system is based on the confidential opinions of members of the Bar and the Judiciary, including both those who are rated and those who are not. Martindale-Hubbell representatives conduct personal interviews to discuss lawyers under review with other members of the Bar. A compilation of these opinions from various sources is necessary to form a consensus, and lawyers under review are sometimes asked to provide professional references to assist with the process. In addition, confidential questionnaires are sent to lawyers and judges in the same geographic location and/or area of practice as the lawyer being rated. Members of the Bar are instructed to assess their colleague's legal ability and general ethical standards.

CV, BV and AV are registered certification marks of Reed Elsevier Properties Inc., used in accordance with the Martindale-Hubbell certification procedures, standards and policies.

Martindale-Hubbell is the facilitator of a peer review rating process. Ratings reflect the confidential opinions of members of the Bar and the Judiciary. Martindale-Hubbell Ratings fall into two categories - legal ability and general ethical standards.