This document summarizes the development and results of a software tool created to assess student learning from library instruction sessions at the University of North Texas. The software allows for anonymous pre- and post-testing of students to measure changes in skills like database searching and finding help from a librarian. Analysis found a 33.2% increase in students' ability to search an academic database, and decreases in library anxiety and ability to find librarian help between pre- and post-tests. The assessment tool is being offered for other institutions to use.