The ultimate authority for the conduct of MacKillop Catholic College rests with the Roman Catholic Church Trust Corporation of the Archdiocese of Hobart (Church Trust Corporation), acting by delegated authority through an appointed Governing Council. The Governing Council conducts the College in collegial partnership with the Board and the College Principal.

The Governing Council’s role primarily is one of supporting and monitoring the operation of the College. The Governing Council delegates the authority for the organisation and management of the College to the Principal and the Board based on a clear commitment to the principle of subsidiarity. The extent of the delegation, as articulated in both the Constitution and relevant employment contracts, is designed to empower and support the College community to operate the College in a strategic, functional and prudent manner.

Present membership includes:

Anne Foale – Chairperson | Christopher Smith – Financial Advisor | Sabina Lane – Deputy Chairperson | Father Mark Green – Parish Priest | Craig Green – Parent Representative | Patty Johnson – Parent Representative | Jason Szczerbanik - Parent Representative | Stephen Hill – College Principal | Lorraine Wolffe – Deputy Principal (Guest) | Andrew Pritchard – Deputy Principal (Guest) | Craig French – College Business Manager (Guest)| Tania Burgess – Executive Assistant to the Principal (Minute Secretary)