Starting in the early years and continuing through 12th grade, it's often the school librarian students know best - seeking them out for help with everything from science fair projects to college applications. The digital revolution not only altered the librarian's role, but also the entire library system. Becky Calzada, president-elect of the American Association of School Librarians and the library coordinator for the Leander Independent School District, said librarians work in the "schools' largest classroom" - and much of what they do is never seen by the public. ...