School library advocacy is increasingly important due to decreases in funding and staff. National organizations attempt to engage school librarians in advocacy and have developed resources and tools to assist with this task. However, there is little research examining how practicing school librarians engage in advocacy and how their advocacy efforts impact their library programs. This study explored school librarians' perceptions of advocacy within the context of their school library setting. Findings suggest school librarians must continue to build relationships with stakeholders and create awareness for the school library position as they define the activities of advocacy unique to their library setting. An emphasis should also be placed on creating meaningful advocacy training in school library preparation courses.