As a parent of last years captain, Ben White, I can correct a few things. The AIS (the tute in local terms) have a relationship with Lake G and most of their senior high school athletes (not just ballers) go there. It is a secondary college in Canberra catering only to year 11 and 12. Through an agreement with the AIS and BA, they are limited to only two players for the NSBT (Male & Female). Usually the Sports Master, Steve Walding picks players to balance any available ACT or good club players.
Last year's team was disrupted due to a last minute schedule change for the AIS to Italy. Pat Mills and Andrew Ogilvie were scheduled to play and were really champing at the bit to go one better than their Silver Medal in Albury in 2005 (Ben did an ankle two weeks before that tournament). Ross Allsop had been advised his AIS scholarship was not to be renewed and as he was still going to Lake, he stepped in at the last minute.
Last year's team had Ross, and 4 ACT rep players, and as someone said on here, yes you can see the teams with Institute, State Institute and Rep players at NSBT. The good news for Lake at this years tournamnet is that Ben is repeating year 12 to cover off some NCAA requirements. So he's hoping for another big few games.