Ithaka S+R has released Driving With Data: A Roadmap for Evidence-Based Decision Making in Academic Libraries.
Here's an excerpt:
Over the past decade, libraries have expanded their use of various types of service assessment. Initially popularized by the LibQUAL+ service, there is now a robust library assessment community, including dedicated assessment librarians and coordinators at many institutions, who are charged with examining existing services and user perceptions with the purpose of documenting the value of the academic library's collections and services and identifying opportunities for improvement. At some institutions, assessment has become an important element of how libraries establish their key priorities on a regular basis.
Today library leaders must do more than build and manage collections, improve the quality of existing services, and find the funding to support this work. In addition, the library leader is called upon to reconsider or reassert the roles and objectives of the library in a changing information environment and to develop the strategy, services, spaces, and staffing to support these roles. In the remainder of this paper, therefore, we will be focusing on the use of data, including the types discussed in this section, to establish strategy and lead to a decision about future directions.