Critical thinking, while often used as a mere buzzword, is clearly relevant to the mission and expertise of librarians who teach. Even in online information literacy instruction, critical thinking remains an important goal. This study attempts to determine the ways and extent to which online information literacy learning objects follow best practices for teaching and assessing critical thinking. In this study, the researcher evaluated a sample of information literacy online learning objects in the Association of College and Research Libraries repository of peer-reviewed instruction materials, PRIMO, using a literature-based rubric. The resulting analysis provides evidence of the extent to which information literacy online learning objects adhere to best practices for teaching and assessing critical thinking.