ASA has certified more than 476,000 ++++ sailing students. Over 300 professional sailing schools around the world use the ASA system. ASA membership represents about 85% of the viable, commercial sailing schools in the U.S. ASA is the standard for sailing education in the US and increasingly elsewhere in the world. ASA certification is recognized by major charter boat companies as well as other ASA facilities around the world. ASA has had a functioning, nationwide keelboat program since 1983. ASA is the only certifying organization which has adopted an instructor code of ethics.