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. .