The document compares two information literacy assessment tools: iSkills and SAILS. iSkills is a proprietary test from ETS that measures critical thinking skills through scenario-based tasks. It is administered online in a proctored environment. SAILS is an open source test from Kent State University that measures competency standards through a multiple choice knowledge test. It is also administered online but does not require proctoring. Both tools measure skills aligned with the ACRL standards but iSkills focuses more on performance of tasks while SAILS focuses on knowledge.