As you would expect with the largest urban population in Australia, Sydney provides many Student Accommodation options to choose from.
Purpose built student accommodation providers in Sydney include Iglu, UniLodge, Campus Living Villages, Urbanest, and Scape.
On-campus accommodation owned and/or managed by your university or college is a good and convenient option. Contact your school or university for more information.
Flatmates.com.au, Gumtree, Realestate.com.au, & Domain are portals for the independent student seeking private apartment/housing.
Homestay networks where you can find and stay with a family in their home are Oz Homestay, Aussie Families Homestay Care, Homestay Network, Meridian Homestay Services, Global Experience, and the Australian Homestay Network.