The Australian Government wants international students to have a rewarding and enjoyable experience
when they come to Australia to study. Australia offers high-quality education services and protects the rights
of international students to ensure they make the most of their time here.

An international student who wants to study in Australia can enroll directly with an Australian education institution. If they want to use an education agent, it’s best to pick one who is authorized and can find the name on the institution’s website.

Students under 18 years of age

The international student who is under the age of 18, their visa application must demonstrate that they will be accompanied by a parent, legal custodian, or an eligible relative. If they will not be living with one of these people, their education institution can agree to be responsible for approving their accommodation, support, and general
welfare arrangements while they are in Australia on a student visa.

Re: https://www.studyinaustralia.gov.au/