This paper looks at the skills and competency base of the school librarian. The paper contends that these attributes are necessary if the school library is to be in a position to encourage the development of discovery and personal growth for both pupils and staff. The paper concentrates on the role of the school librarian working with teaching staff to make these conditions most fruitful. As well as traditional librarianship skills, the paper identifies a range of skills and competencies associated with management, marketing, and evaluation. The paper identifies a number of ways in which the librarian may work effectively with teaching colleagues. The paper concludes that, without this foundation, effective ongoing learning in the school library will be limited in extent and progression. As a result, the role of the library will be unperceived and undervalued. It is, therefore, important that time and energy are given to these essential aspects of the development of the school library. (Contains 14 references.) (Author/MES)