A role as a Teacher Librarian can be extremely rewarding and dynamic. To be a Teacher Librarian, you will need an undergrad Education degree or a Grad Dip in Education and then Library and Information qualifications in Teacher Librarianship or vice versa i.e. Librarianship and Corporate Information Management and then a Grad Dip in Education. This is for School Libraries only. You do not need a teaching degree to work as an Academic Librarian.
The Washington Library Media Association has published this short video on the valued role of the Teacher Librarian.