Definition: The Professional Ski Instructors of America (PSIA) is the premier organization offering training and certification for U.S. Ski Instructors.
THe PSIA was founded in 1961 to set a national training method and to certify instructors in this training model. In 1964 the organization standardized a system and published "The Official American Ski Technique" (AST) manual.
Examples:
Tim is PSIA Certified Level III ski instructor.
