How the role of a teacher librarian is different from that of a classroom teacher?

A teacher librarian asserts a very specialised and unique position within the school community.  In addition to teacher training in education, a teacher librarian is also professionally trained in two other key areas: library science and information science. Primarily, a teacher’s responsibility lies in teaching curriculum to a specific level or class, a teacher librarian oversees the deliverance of information knowledge to the whole student population. The scope of the teacher librarian’s work entails much more.