For all international students under 18 coming to Australia for studies, it is essential to nominate a legal guardian before receiving approval on their visa. Students may select a parent, legal custodian or relative who is a minimum of 21 years of age as their student guardian. The guardian must hold a valid Student Guardian 590 visa to stay in the country for the duration of the student’s visa or until they turn 18. The guardian must have enough money to support themselves and the student during their stay in Australia. The guardian must also be able to take care of their accommodation, welfare and other support.