In an environment in which libraries need to demonstrate value, illustrating how the library contributes to student learning is critical. Gathering and analyzing data to tell the library's story as well as identify areas for improvement require commitment, time, effort, and resources-all components of a culture of assessment. This paper presents the results of a survey designed to understand what factors facilitate the development of a culture of assessment of student learning in academic libraries and what factors may hinder it. Unlike previous research in this area, which has focused on case studies and surveys with nonrepresentative samples, the authors conducted a systematic survey of academic libraries at four-year institutions in the United States and achieved a 42 percent response rate. The results suggest certain factors are highly associated with a culture of assessment and provide guidance to administrators and front-line librarians working to build such a culture.n Lakos and Phipps' seminal work on creating an assessment culture in academic libraries, they included a definition of a culture of assessment from a presentation given by Lakos, Phipps, and Wilson, which is often quoted:A Culture of Assessment is an organizational environment in which decisions are based on facts, research, and analysis, and where services are planned and delivered in ways that maximize positive outcomes and impacts for customers and stakeholders. A Culture of Assessment exists in organizations where staff care to know what results they produce and how those results relate to customers' expectations. Organizational mission, values, structures, and systems support behavior that is performance and learning focused. By this definition, a culture of assessment is conceived of at the organizational level and is largely fostered by the leadership. The description also suggests that, in some