The foundation of any organization is its culture. Organisational Culture is a unique constellation of values, belief, vision and mission which is created, inculcated, shared and enriched by the people working there. Every corporate organisation has its own culture with varied dynamics. Can schools be far behind when they are microcosms of activity? With administrative units, teaching and non teaching staff, students, parents and attached services schools cater to a number of small organisational structures within the main organisation. It is not a surprise that schools have developed organisational cultures in them. There are mainly three types of educational board in Mumbai city viz S.S.C, C.B.S.E and I.C.S.E. The present study focuses on to study which type of Organisational culture exists and preferred in an educational organization with respect to the dimensions - Power culture, Role culture, Achievement culture and Support culture. Every organization has some combination of these four basic organizational cultures. For this study data was collected through a reliable and valid tool which was administered on a sample of 570 secondary school teachers of Mumbai. This research paper is a report of the secondary school teachers’ perception of the existing and preferred culture in S.S.C, C.B.S.E and I.C.S.E boards.