Isobel Williams, president of the Australian School Library Association, discusses the importance of advocacy for school libraries. She outlines some risks libraries face like funding squeezes and perceptions that libraries are only for books. Effective advocacy involves building long-term relationships, understanding decision-makers' priorities, and telling stories about the transformative impact of libraries. Advocates should target messages to different audiences like principals, teachers, and parents. The goal is to change perceptions and show how libraries benefit students and communities.