This document summarizes a study on the interplay between conventional metadata and user-generated tags for educational resources. The study found that tags provide additional searchability and classification beyond formal metadata standards. Users tagged in multiple languages and a significant portion of tags matched terms in an educational thesaurus. Tags that generated more clicks proved more useful for finding resources than tags that were less used. Expert indexers found many user tags to be descriptive like formal metadata fields. Tags created new navigational structures between users, resources, and descriptors across languages and repositories.