Clarification: what do you mean about SPONSOR? For a visa?
Because if so its not about the school but the immigration who will set on who CAN be a sponsor not just ANYONE can be a sponsor
Please read: http://philippines.embassy.gov.au/mnla/Student_Visa_Requirements.html
If you have relatives in Australia they can provide you supporting documents that include their relations to you,an affidavit of support, which can include their financial documents, visa status etc..
But not all relatives can serve as a support only direct relatives meaning grand parents, parents, aunts and uncle, brother or sister etc...