As you want to get the details of rankings of MBA Business Schools of Australia so here is the information of the same for you:

FT (Financial Times) Global MBA Australian rankings:
2015 2014 2013 2012 Business School
68 - - - Macquarie University
75 62 48 41 AGSM University of New South Wales
90 68 62 46 University of Melbourne

Latest BOSS AFR Australian MBA Rankings:
Rank Business School
1 University of Queensland (UQ) Business School
2 Melbourne Business School, The University of Melbourne
3 Queensland University of Technology (QUT) Graduate School of Business
4 Griffith Business School, Griffith University
5 University of Southern Queensland (USQ) School of Management and Enterprise
6 Adelaide Business School, University of Adelaide
7 Bond Business School, Bond University
8 University of the Sunshine Coast, School of Business
9 University of South Australia (UniSA) Business School
10 Victoria University, Graduate School of Business
11 Deakin Business School, Deakin University
12 Curtin University, Graduate School of Business
13 Central Queensland University (CQU) School of Business and Law
14 La Trobe Business School, La Trobe University
15 University of Wollongong, Sydney Business School
16 RMIT University, Graduate School of Business and Law
17 University of Technology (UTS) Business School

Boss / AFR Australian Executive MBA (EMBA) Rankings:
Rank Executive MBA Provider
1 University of Sydney Business School
2 Melbourne Business School, The University of Melbourne
3 Queensland University of Technology (QUT) Graduate School of Business
4 Bond Business School, Bond University
5 University of the Sunshine Coast, School of Business
6 Australian Catholic University (ACU) School of Business
7 University of Technology (UTS) Business School
8 RMIT University, Graduate School of Business and Law
9 University of Wollongong, Sydney Business School

Graduate Management Association of Australia (GMAA) 5 Star MBA Rankings:
Rank Business School
5 stars La Trobe University
5 stars Queensland University of Technology
5 stars RMIT University
5 stars University of Adelaide
5 stars University of Queensland
5 stars University of South Australia
5 stars University of Western Australia

The Economist Global MBA Rankings:
2014 2013 2012 2011 Business School
16 14 27 46 University of Queensland
40 27 38 32 University of Melbourne
49 55 61 73 Macquarie University
- - 46 58 Curtin University

Forbes Rankings of MBA Programs Outside America:
Rank Business School Years to Payback Median GMAT
24 AGSM University of New South Wales 4.4 630

QS Top Australian Business Schools:
Aus Rank Business School A/P Rank
1 Melbourne Business School, The University of Melbourne 7
2 AGSM MBA, University of New South Wales 9
3 College of Business and Economics, Australian National University ANU 11
4 La Trobe Business School, La Trobe University 14
5 Monash Business School, Monash University 15=
6 UQ Business School, University of Queensland 19
7 Sydney Business School, University of Wollongong 22
8 Macquarie Graduate School of Management, Macquarie University 24
9 Graduate School of Business and Law, RMIT University 25
10 UWA Business School, University of Western Australia 27
11 The University of Adelaide - Business School, University of Adelaide 28
12 QUT Graduate School of Business, Queensland University of Technology 30

US News Top 100 Economics & Business Schools Australian Entrants:
Aus Rank University World Rank
1 University of Melbourne 37
2 University of New South Wales 55=
3 Australian National University 60
4 University of Sydney 66=
5 University of Queensland 71
6 Monash University 79
7 University of Technology Sydney 95