Several determinants of the growth of bureaucracy in schools have been isolated. Proliferation of bureaucratic rules is directly related to the size of the school, but inversely related to socioeconomic status of the students. Also, as the proportion of female teachers in a department rises, the number of rules increases, even though more female teachers have tenure than males, and females have more teaching experience than males. Proliferation of rules is greatest in schools having a disparity between the socioeconomic status of the teachers and that of the students; rules are used in these schools to protect the organization from outside influences as well as to provide security for teachers and administrators. Bureaucratic rules are only one of several methods of control available to an organization. The history of the organization, the nature of the profession, the expectations of professionals, and their training may all play a part. It is strongly suggested that the use and acceptance of rules to control and coordinate actions may be peculiar to certain professions. (Author/DE)