While the idea of data collection is new for many library media specialists, traditional statistics such as circulation, age, value, total collection numbers, class use of the library media center, etc. have been gathered since the dawn of library time. Typically these statistics are gathered simply because it has always been done, but library media specialists need to make sure that any data they are collecting are worth the time and energy expended. Although not the only data to be collected, evaluated, and shared, traditional statistics show how the library media center resources and facilities are used. The resources available from the library media center, regardless of format, are the tools that foster student learning. Library media specialists use many criteria when selecting materials. There are many sources of collection data. The wise library media specialist will analyze the collection, develop selection and deselection checklists and routines, and communicate the good and bad news about the quality and quantity of library media center resources that influence student achievement and are student learning tools. (Contains 1 figure and 7 resources.)