A survey of library directors and assistant/associate directors at the 19 campuses of California State University (CSU) revealed a number of factors mitigating against the implementation of assessment center programs for the development of academic library managers. Respondents were asked in a questionnaire to describe their attitudes toward assessment centers in terms of: (1) assessment support; (2) number of identifiable potential candidates for assessment centers existing in their own libraries; (3) willingness to serve as an assessor; and (4) definition of job dimensions attributable to a CSU library manager. The data collected from 29 of the 44 questionnaires distributed in January 1987 (66.6% response rate) were analyzed, and it was concluded that philosophic differences in the administrators' views of professional development for librarians, as well as ambivalences about the value of programs intended to promote such development, are a major factor working against the implementation of an assessment center specifically for librarians. Three tables display the analyses of data on the administrators' attitudes toward assessment centers; job dimensions of library managers as rated by the CSU administrators; and a transcript of some of the respondents' comments. (CGD)