In schools where student learning is a top priority, librarians' roles include teacher, instructional partner, reading motivator, staff developer, information specialist, curator, and program administrator. They are steered by national standards akin to those guiding core subjects, and it is the librarians' job to embed these standards authentically into the school curriculum through all disciplines, including English. In this article, the author describes several of the many ways that school librarians can be of assistance to teachers--such as assisting teachers in addressing the Common Core State Standards, introducing teachers to new materials, providing teachers with the best research materials, customizing materials for teachers, providing a 21st-century library, assisting teachers in scaffolding successful research projects, building skills for lifelong learning, and assisting teachers in evaluating student work.