Librarians typically need a master's degree, often called a Master of Library Science (MLS) or Master of Library and Information Science (MLIS), because it provides comprehensive, specialized training essential for professional librarian roles. This advanced degree equips librarians with deep knowledge of information organization, retrieval, management, and preservation, along with practical skills in collection development, user services, digital systems, and information literacy. It also prepares them to handle complex responsibilities such as archiving, managing diverse resources, leading library operations, and serving varied community needs effectively. The MLS/MLIS is considered the gold standard credential that signals readiness for the evolving demands of modern libraries—far beyond just managing books. It prepares librarians to innovate, promote literacy, bridge digital divides, defend privacy rights, and support lifelong learning and cultural preservation. Many employers, especially in academic, public, and special libraries, expect this degree for professional librarian positions to ensure expertise and leadership potential. In essence, a master's degree is necessary because the work of a professional librarian requires advanced knowledge and skills akin to other specialized professions, making it more than a basic job but a career with meaningful impact and responsibilities.
