TRAILS was developed in response to a perceived need to provide an easy way to get a snapshot of high school students’ understanding of basic information literacy concepts. Work began in 2004 with an extensive review of the information literacy components in the Ohio Academic Content Standards (ACS) and their alignment with Information Power. Objectives were written, followed by the development of assessment items based on those objectives. In 2005, these draft items were field-tested by volunteer library media specialists working with 9th grade students. TRAILS was made available for use by library media specialists and teachers in the spring of 2006. Refinements were made during the summer of 2006, and the revised version is available beginning in the fall of 2006.