In an effort to carry out the work of Bismarck (ND) Public Schools, while implementing the American Association of School Librarians (AASL) "National School Library Standards for Learners, School Librarians, and School Libraries," the district has started training school librarians to be the backbone of the project-based learning (PBL) movement. The school library can be a natural vehicle to drive transformation when improving PBL teaching practices and implementing inquiry learning. As instructional leaders, school librarians can support and deliver teacher training and facilitate students' project creation. They can support implementation by coteaching and collaborating with classroom teachers on their projects. They are masters at finding and providing resources that encourage sustained inquiry and can support reflective teaching practices by modeling and facilitating positive, collaborative experiences. Bismarck Public Schools' goals of integrating PBL across all grade levels to better meet the needs of the 21st-century student can be strengthened through a strong school library. As student projects are being developed, school librarians are there to support learners and their classroom teachers through design, implementation, assessment, revision, and reflection. This effective support has opened the door in some buildings for school librarians to begin coteaching with classroom teachers in an effort to provide seamless integration of content and school library standards. This article about the PBL experience in the Bismarck Public Schools is written from the perspectives of a district administrator, a school librarian, and a middle school teacher.