Reminder from someone who worked within the AAGPS system, sporting scholarships are not a thing. AAGPS schools use other forms of inducements to get students in. (Old Boy Unions TKS, Rugby Bursary Fund TSC and Tongan Advancement Organisation NC). Plus there are many schools who now use Leagues Clubs to park players (Newington, Kings) and those who use "boosters" were current or older parents pay fees. (Scots have been doing this for over a decade in many sports, basketball worse offender)
Joeys have a "Boys from the Bush" Bursary but these are decided over time and not quickly. The hard part is getting the mums to agree to let their lads go. Contrary to some, the Joeys Old Boys Union only provides hardship funding for current students. Normally these are for families on the land who have sons in the senior years. Indigenous scholarships are only given in year 7 and for actual indigenous students.