The Mater Maria Catholic College Board within the Catholic Diocese of Broken Bay is a board of pastoral governance. A model of discernment called 'sharing wisdom' has been adopted as the most appropriate form of school governance in the diocese. The College Board listens to the wisdom of the members of their community and their own board membership in order to know how best to lead and serve them.

The purpose of the College Board is to build, strengthen and nourish the College as part of the wider faith community. The College Board is a structure intended to facilitate members of the College and faith community to share responsibility for the well being of the whole of the College within the beliefs and values, teachings and traditions of the Church.

The role of the Board is one of stewardship – developing the College in all its facets 'in trust' for the faith community. As stewards, the Board Is called, through the Spirit, to serve the faith community by caring for and developing its school community. In this role, members of the Board are called to servant leadership, collectively accepting accountability for the school's well being.

The College Board is accountable to the Bishop through the Director of Schools. Membership of the College Board is discerned by the local faith community and commissioned by the Bishop. Accepting membership of the College Board is acceptance of a call to the ministry of service within and for the educational enterprise of the Church.

The College Board meets twice per school term.