This study examines how school librarians in Georgia's K-12 public schools foster positive reading cultures. Using qualitative research, it explores how librarians promote reading engagement by creating inviting library spaces, curating diverse collections, developing programs that encourage reading for pleasure and academic growth, and collaborating with school community members. The research is guided by the Reading Culture framework, adapted from a combination of the cultures framework and the Expectancy-Value Theory of Achievement Motivation. This framework contextualizes how librarians influence reading culture through resources, programming, and relationships. These study's findings contain best practices for school improvement in encouraging student reading engagement and increased literacy growth. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]