Here is a guide that provides basic information to help teen/youth services librarians, library directors, library school students studying teen services, and middle/high school librarians examine all aspects of their teen programs and services to determine where improvement is needed. Find out what you need to develop goals and objectives for evaluation and learn how to collect the data that will give you a realistic picture of your library's strengths and weaknesses. You will get practical examples of how to use many different types of data: numerical and subjective data, output measures, user data, circulation and collection statistics, policies and procedures, strategic plans, community needs assessments, budget statistics, program information, facility information, and data about training and staff development.