...Fitch Ratings has upgraded the rating on the Association of American Medical Colleges' (AAMC) outstanding revenue bonds to `AA' from `A+' based on a full credit review according to the "Rating Criteria for Public Sector Revenue-Supported Debt," dated June 2017 and available on Fitch's website at www.fitchratings.com. Fitch has also assigned an Issuer Default Rating of `AA' to AAMC. The ratings reflect AAMC's position as the primary provider of essential services for students seeking to pursue a career in medicine, which solidifies AAMC's demand and pricing characteristics, its largely variable cost structure (which offers AAMC a high degree of operating flexibility) and a robust financial profile, characterized by maintenance of negative net adjusted debt through both moderate and severe stress scenarios....