Through an agreement between the School of Librarianship of the University of Washington and the Seattle Public Library (SPL), an on-going system for staff development at SPL was implemented. The study contains four parts: (1) the research methodology used to identify staff developmental needs; (2) the needs identified; (3) the elements of a staff developmental system; and (4) how to implement that system at SPL. The developmental needs were identified through individual interviews, a written questionnaire, and group discussions. Needs common to all staff cluster around training that will enhance communication, management, professional expertise, and personal relations with staff and clients. Assessment of staff needs will be accomplished by comparing present staff capabilities with established staff goals and plans for achieving these goals such as (1) position descriptions, (2) position specifications, (3) selection of personnel, (4) performance review, (5) formal assessment, and (6) the Annual and Long-Range plans. A Staff Development Planning Group will be established to refine library goals through consultation with staff and in conjunction with the administration and Board of Trustees, Appendices tabulate the staff development needs in categories for group discussion. (Author/JAB)