What degree is required to become a elementary/high school librarian?
In the United States, the master’s in Library Science is the entry degree for librarians. I have worked in both public and academic libraries and for professional positions your application is not even considered if you don’t have an MLS/MLIS/MIS. Having said that, most libraries have “non-professional” or “paraprofessional” positions that do not require a master’s. And the requirements for school librarians or “media specialists” vary widely from state to state. In some states only a certification program is required for school librarians — in those cases no MLS is required, though I can’t imagine it could hurt your chances. Never having worked as a school librarian I know very little about these programs. Talk to someone at a library school about your plans, and they will help you make the decisions most appropriate for your career. And good luck!