Great Southern Grammar is governed by the School Council, consisting of the following members:
- Mrs Fran Leary (Chair and Chair of Finance)
- Mrs Anne Hey
- Mrs Kylie Smith
- Mr Ian Clarke
- Mr Simon Thomas
- Mr Tom Moir
- Mr Rowan Gilbert
- Mr Mark Sawle (Principal) (ex-officio)
- Mr Andrew Orr (Business Manager) (ex-officio)
The Principal reports to the School Council on a monthly basis about the operational running of the school.
The School Council is accountable for four specified areas:
- development and implementation of an effective strategic direction for the school
- development and implementation of effective processes to plan for, monitor and achieve improvements in student learning
- effective management of the school’s financial resources in accordance, where relevant, with any purposes for which they are provided
- compliance with all written and other laws that apply to and in respect of the school and the operation of the school