The purpose of this study was to determine the organizational values that are needed to be shared for an effective staff diversity management in schools by analysing the views of school managers. A phenomenological research design was employed in the study. The data were collected through semi-structured interviews with 17 school managers chosen by purposeful sampling. In order to analyze the data, categorical and descriptive analysis techniques were used. The results of the study revealed that school managers emphasized 23 staff related and 27 organization related diversities that they believe to be shared by all members of the school for effective diversity management.